CVE-2026-15718
Invalid pointer in the JavaScript: WebAssembly component
CVE-2026-15718 is fixed in 211 products on 3 platforms, first by Mozilla Firefox 152.0.6, released July 13, 2026. 100 other affected products have no fix yet. It is not reported as exploited. Patch Radar priority: High.
HighFixed on 3 platforms
CVSS
8.8
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0049
42nd percentile
We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 140.13, and Thunderbird 140.13.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Firefox Developer Edition (en-US) | 156.0 | Firefox Developer Edition (en-US) 156.0 | Sep 2, 2026 |
| Mozilla Firefox (ach) | 152.0.6 | Mozilla Firefox (ach) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (af) | 152.0.6 | Mozilla Firefox (af) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (an) | 152.0.6 | Mozilla Firefox (an) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (ar) | 152.0.6 | Mozilla Firefox (ar) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (ast) | 152.0.6 | Mozilla Firefox (ast) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (az) | 152.0.6 | Mozilla Firefox (az) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (be) | 152.0.6 | Mozilla Firefox (be) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (bg) | 152.0.6 | Mozilla Firefox (bg) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (bn) | 152.0.6 | Mozilla Firefox (bn) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (br) | 152.0.6 | Mozilla Firefox (br) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (bs) | 152.0.6 | Mozilla Firefox (bs) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (ca) | 152.0.6 | Mozilla Firefox (ca) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (ca-valencia) | 152.0.6 | Mozilla Firefox (ca-valencia) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (cak) | 152.0.6 | Mozilla Firefox (cak) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (cs) | 152.0.6 | Mozilla Firefox (cs) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (cy) | 152.0.6 | Mozilla Firefox (cy) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (da) | 152.0.6 | Mozilla Firefox (da) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (de) | 152.0.6 | Mozilla Firefox (de) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (dsb) | 152.0.6 | Mozilla Firefox (dsb) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (el) | 152.0.6 | Mozilla Firefox (el) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (en-CA) | 152.0.6 | Mozilla Firefox (en-CA) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (en-GB) | 152.0.6 | Mozilla Firefox (en-GB) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (en-US) | 152.0.6 | Mozilla Firefox (en-US) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (eo) | 152.0.6 | Mozilla Firefox (eo) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (es-AR) | 152.0.6 | Mozilla Firefox (es-AR) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (es-CL) | 152.0.6 | Mozilla Firefox (es-CL) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (es-ES) | 152.0.6 | Mozilla Firefox (es-ES) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (es-MX) | 152.0.6 | Mozilla Firefox (es-MX) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (et) | 152.0.6 | Mozilla Firefox (et) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (eu) | 152.0.6 | Mozilla Firefox (eu) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (fa) | 152.0.6 | Mozilla Firefox (fa) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (ff) | 152.0.6 | Mozilla Firefox (ff) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (fi) | 152.0.6 | Mozilla Firefox (fi) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (fr) | 152.0.6 | Mozilla Firefox (fr) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (fur) | 152.0.6 | Mozilla Firefox (fur) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (fy-NL) | 152.0.6 | Mozilla Firefox (fy-NL) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (ga-IE) | 152.0.6 | Mozilla Firefox (ga-IE) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (gd) | 152.0.6 | Mozilla Firefox (gd) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (gl) | 152.0.6 | Mozilla Firefox (gl) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (gn) | 152.0.6 | Mozilla Firefox (gn) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (gu-IN) | 152.0.6 | Mozilla Firefox (gu-IN) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (he) | 152.0.6 | Mozilla Firefox (he) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (hi-IN) | 152.0.6 | Mozilla Firefox (hi-IN) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (hr) | 152.0.6 | Mozilla Firefox (hr) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (hsb) | 152.0.6 | Mozilla Firefox (hsb) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (hu) | 152.0.6 | Mozilla Firefox (hu) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (hy-AM) | 152.0.6 | Mozilla Firefox (hy-AM) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (ia) | 152.0.6 | Mozilla Firefox (ia) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (id) | 152.0.6 | Mozilla Firefox (id) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (is) | 152.0.6 | Mozilla Firefox (is) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (it) | 152.0.6 | Mozilla Firefox (it) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (ja) | 152.0.6 | Mozilla Firefox (ja) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (ka) | 152.0.6 | Mozilla Firefox (ka) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (kab) | 152.0.6 | Mozilla Firefox (kab) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (kk) | 152.0.6 | Mozilla Firefox (kk) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (km) | 152.0.6 | Mozilla Firefox (km) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (kn) | 152.0.6 | Mozilla Firefox (kn) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (ko) | 152.0.6 | Mozilla Firefox (ko) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (lij) | 152.0.6 | Mozilla Firefox (lij) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (lt) | 152.0.6 | Mozilla Firefox (lt) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (lv) | 152.0.6 | Mozilla Firefox (lv) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (mk) | 152.0.6 | Mozilla Firefox (mk) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (mr) | 152.0.6 | Mozilla Firefox (mr) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (ms) | 152.0.6 | Mozilla Firefox (ms) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (my) | 152.0.6 | Mozilla Firefox (my) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (nb-NO) | 152.0.6 | Mozilla Firefox (nb-NO) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (ne-NP) | 152.0.6 | Mozilla Firefox (ne-NP) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (nl) | 152.0.6 | Mozilla Firefox (nl) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (nn-NO) | 152.0.6 | Mozilla Firefox (nn-NO) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (oc) | 152.0.6 | Mozilla Firefox (oc) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (pa-IN) | 152.0.6 | Mozilla Firefox (pa-IN) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (pl) | 152.0.6 | Mozilla Firefox (pl) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (pt-BR) | 152.0.6 | Mozilla Firefox (pt-BR) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (pt-PT) | 152.0.6 | Mozilla Firefox (pt-PT) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (rm) | 152.0.6 | Mozilla Firefox (rm) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (ro) | 152.0.6 | Mozilla Firefox (ro) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (ru) | 152.0.6 | Mozilla Firefox (ru) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (sc) | 152.0.6 | Mozilla Firefox (sc) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (sco) | 152.0.6 | Mozilla Firefox (sco) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (si) | 152.0.6 | Mozilla Firefox (si) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (sk) | 152.0.6 | Mozilla Firefox (sk) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (sl) | 152.0.6 | Mozilla Firefox (sl) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (son) | 152.0.6 | Mozilla Firefox (son) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (sq) | 152.0.6 | Mozilla Firefox (sq) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (sr) | 152.0.6 | Mozilla Firefox (sr) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (sv-SE) | 152.0.6 | Mozilla Firefox (sv-SE) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (szl) | 152.0.6 | Mozilla Firefox (szl) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (ta) | 152.0.6 | Mozilla Firefox (ta) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (te) | 152.0.6 | Mozilla Firefox (te) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (tg) | 152.0.6 | Mozilla Firefox (tg) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (th) | 152.0.6 | Mozilla Firefox (th) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (tl) | 152.0.6 | Mozilla Firefox (tl) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (tr) | 152.0.6 | Mozilla Firefox (tr) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (trs) | 152.0.6 | Mozilla Firefox (trs) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (uk) | 152.0.6 | Mozilla Firefox (uk) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (ur) | 152.0.6 | Mozilla Firefox (ur) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (uz) | 152.0.6 | Mozilla Firefox (uz) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (vi) | 152.0.6 | Mozilla Firefox (vi) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (xh) | 152.0.6 | Mozilla Firefox (xh) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (zh-CN) | 152.0.6 | Mozilla Firefox (zh-CN) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox (zh-TW) | 152.0.6 | Mozilla Firefox (zh-TW) 152.0.6 | Jul 14, 2026 |
| Mozilla Firefox ESR (ach) | 153.0.0 | Mozilla Firefox ESR (ach) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (af) | 153.0.0 | Mozilla Firefox ESR (af) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (an) | 153.0.0 | Mozilla Firefox ESR (an) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ar) | 153.0.0 | Mozilla Firefox ESR (ar) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ast) | 153.0.0 | Mozilla Firefox ESR (ast) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (az) | 153.0.0 | Mozilla Firefox ESR (az) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (be) | 153.0.0 | Mozilla Firefox ESR (be) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (bg) | 153.0.0 | Mozilla Firefox ESR (bg) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (bn) | 153.0.0 | Mozilla Firefox ESR (bn) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (br) | 153.0.0 | Mozilla Firefox ESR (br) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (bs) | 153.0.0 | Mozilla Firefox ESR (bs) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ca) | 153.0.0 | Mozilla Firefox ESR (ca) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ca-valencia) | 153.0.0 | Mozilla Firefox ESR (ca-valencia) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (cak) | 153.0.0 | Mozilla Firefox ESR (cak) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (cs) | 153.0.0 | Mozilla Firefox ESR (cs) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (cy) | 153.0.0 | Mozilla Firefox ESR (cy) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (da) | 153.0.0 | Mozilla Firefox ESR (da) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (de) | 153.0.0 | Mozilla Firefox ESR (de) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (dsb) | 153.0.0 | Mozilla Firefox ESR (dsb) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (el) | 153.0.0 | Mozilla Firefox ESR (el) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (en-CA) | 153.0.0 | Mozilla Firefox ESR (en-CA) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (en-GB) | 153.0.0 | Mozilla Firefox ESR (en-GB) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (en-US) | 153.0.0 | Mozilla Firefox ESR (en-US) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (eo) | 153.0.0 | Mozilla Firefox ESR (eo) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (es-AR) | 153.0.0 | Mozilla Firefox ESR (es-AR) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (es-CL) | 153.0.0 | Mozilla Firefox ESR (es-CL) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (es-ES) | 153.0.0 | Mozilla Firefox ESR (es-ES) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (es-MX) | 153.0.0 | Mozilla Firefox ESR (es-MX) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (et) | 153.0.0 | Mozilla Firefox ESR (et) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (eu) | 153.0.0 | Mozilla Firefox ESR (eu) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (fa) | 153.0.0 | Mozilla Firefox ESR (fa) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ff) | 153.0.0 | Mozilla Firefox ESR (ff) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (fi) | 153.0.0 | Mozilla Firefox ESR (fi) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (fr) | 153.0.0 | Mozilla Firefox ESR (fr) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (fur) | 153.0.0 | Mozilla Firefox ESR (fur) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (fy-NL) | 153.0.0 | Mozilla Firefox ESR (fy-NL) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ga-IE) | 153.0.0 | Mozilla Firefox ESR (ga-IE) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (gd) | 153.0.0 | Mozilla Firefox ESR (gd) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (gl) | 153.0.0 | Mozilla Firefox ESR (gl) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (gn) | 153.0.0 | Mozilla Firefox ESR (gn) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (gu-IN) | 153.0.0 | Mozilla Firefox ESR (gu-IN) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (he) | 153.0.0 | Mozilla Firefox ESR (he) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (hi-IN) | 153.0.0 | Mozilla Firefox ESR (hi-IN) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (hr) | 153.0.0 | Mozilla Firefox ESR (hr) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (hsb) | 153.0.0 | Mozilla Firefox ESR (hsb) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (hu) | 153.0.0 | Mozilla Firefox ESR (hu) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (hy-AM) | 153.0.0 | Mozilla Firefox ESR (hy-AM) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ia) | 153.0.0 | Mozilla Firefox ESR (ia) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (id) | 153.0.0 | Mozilla Firefox ESR (id) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (is) | 153.0.0 | Mozilla Firefox ESR (is) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (it) | 153.0.0 | Mozilla Firefox ESR (it) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ja) | 153.0.0 | Mozilla Firefox ESR (ja) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ka) | 153.0.0 | Mozilla Firefox ESR (ka) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (kab) | 153.0.0 | Mozilla Firefox ESR (kab) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (kk) | 153.0.0 | Mozilla Firefox ESR (kk) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (km) | 153.0.0 | Mozilla Firefox ESR (km) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (kn) | 153.0.0 | Mozilla Firefox ESR (kn) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ko) | 153.0.0 | Mozilla Firefox ESR (ko) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (lij) | 153.0.0 | Mozilla Firefox ESR (lij) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (lt) | 153.0.0 | Mozilla Firefox ESR (lt) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (lv) | 153.0.0 | Mozilla Firefox ESR (lv) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (mk) | 153.0.0 | Mozilla Firefox ESR (mk) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (mr) | 153.0.0 | Mozilla Firefox ESR (mr) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ms) | 153.0.0 | Mozilla Firefox ESR (ms) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (my) | 153.0.0 | Mozilla Firefox ESR (my) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (nb-NO) | 153.0.0 | Mozilla Firefox ESR (nb-NO) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ne-NP) | 153.0.0 | Mozilla Firefox ESR (ne-NP) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (nl) | 153.0.0 | Mozilla Firefox ESR (nl) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (nn-NO) | 153.0.0 | Mozilla Firefox ESR (nn-NO) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (oc) | 153.0.0 | Mozilla Firefox ESR (oc) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (pa-IN) | 153.0.0 | Mozilla Firefox ESR (pa-IN) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (pl) | 153.0.0 | Mozilla Firefox ESR (pl) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (pt-BR) | 153.0.0 | Mozilla Firefox ESR (pt-BR) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (pt-PT) | 153.0.0 | Mozilla Firefox ESR (pt-PT) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (rm) | 153.0.0 | Mozilla Firefox ESR (rm) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ro) | 153.0.0 | Mozilla Firefox ESR (ro) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ru) | 153.0.0 | Mozilla Firefox ESR (ru) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (sat) | 153.0.0 | Mozilla Firefox ESR (sat) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (sc) | 153.0.0 | Mozilla Firefox ESR (sc) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (sco) | 153.0.0 | Mozilla Firefox ESR (sco) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (si) | 153.0.0 | Mozilla Firefox ESR (si) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (sk) | 153.0.0 | Mozilla Firefox ESR (sk) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (sl) | 153.0.0 | Mozilla Firefox ESR (sl) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (son) | 153.0.0 | Mozilla Firefox ESR (son) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (sq) | 153.0.0 | Mozilla Firefox ESR (sq) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (sr) | 153.0.0 | Mozilla Firefox ESR (sr) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (sv-SE) | 153.0.0 | Mozilla Firefox ESR (sv-SE) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (szl) | 153.0.0 | Mozilla Firefox ESR (szl) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ta) | 153.0.0 | Mozilla Firefox ESR (ta) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (te) | 153.0.0 | Mozilla Firefox ESR (te) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (tg) | 153.0.0 | Mozilla Firefox ESR (tg) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (th) | 153.0.0 | Mozilla Firefox ESR (th) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (tl) | 153.0.0 | Mozilla Firefox ESR (tl) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (tr) | 153.0.0 | Mozilla Firefox ESR (tr) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (trs) | 153.0.0 | Mozilla Firefox ESR (trs) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (uk) | 153.0.0 | Mozilla Firefox ESR (uk) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ur) | 153.0.0 | Mozilla Firefox ESR (ur) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (uz) | 153.0.0 | Mozilla Firefox ESR (uz) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (vi) | 153.0.0 | Mozilla Firefox ESR (vi) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (xh) | 153.0.0 | Mozilla Firefox ESR (xh) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (zh-CN) | 153.0.0 | Mozilla Firefox ESR (zh-CN) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (zh-TW) | 153.0.0 | Mozilla Firefox ESR (zh-TW) 153.0.0 | Jul 20, 2026 |
| macOS | |||
| Mozilla Firefox | 152.0.6 | Mozilla Firefox 152.0.6 | Jul 13, 2026 |
| Linux | |||
| MozillaFirefox · opensuse-leap 16.0 | 140.13.0-160000.1.1 | OPENSUSE-SU-2026:21519-1 | Aug 3, 2026 |
| MozillaFirefox · sles 15.6 | 140.13.0-150200.152.248.1 | SUSE-SU-2026:3221-1 | Jul 23, 2026 |
| MozillaFirefox · sles 15.7 | 140.13.0-150200.152.248.1 | SUSE-SU-2026:3221-1 | Jul 23, 2026 |
| MozillaFirefox · sles 16.0 | 140.13.0-160000.1.1 | SUSE-SU-2026:23137-1 | Aug 3, 2026 |
| MozillaThunderbird · sles 15.7 | 140.13.0-150200.8.280.1 | SUSE-SU-2026:3546-1 | Aug 10, 2026 |
| firefox · RHEL 10 | 140.13.0-1.el10_0 | RHSA-2026:54181 | Jul 31, 2026 |
| firefox · RHEL 8 | 0:140.13.0-1.el8_10 | RHSA-2026:47105 | Jul 31, 2026 |
| firefox · RHEL 9 | 0:140.13.0-1.el9_8 | RHSA-2026:47104 | Aug 5, 2026 |
| firefox · almalinux 10 | 140.13.0-1.el10_2 | ALSA-2026:47101 | Jul 28, 2026 |
| firefox · almalinux 8 | 140.13.0-1.el8_10.alma.1 | ALSA-2026:47105 | Jul 28, 2026 |
| firefox · almalinux 9 | 140.13.0-1.el9_8.alma.1 | ALSA-2026:47104 | Jul 28, 2026 |
| firefox · ol 10 | 0:140.13.0-1.0.1.el10_2 | ELSA-2026-47101 | Jul 28, 2026 |
| firefox · ol 8 | 0:140.13.0-1.0.1.el8_10 | ELSA-2026-47105 | Jul 28, 2026 |
| firefox · ol 9 | 0:140.13.0-1.0.1.el9_8 | ELSA-2026-47104 | Jul 29, 2026 |
| firefox · rocky 10 | 0:140.13.0-1.el10_2 | RLSA-2026:47101 | Jul 30, 2026 |
| firefox · rocky 8 | 0:140.13.0-1.el8_10 | RLSA-2026:47105 | Jul 29, 2026 |
| firefox · rocky 9 | 0:140.13.0-1.el9_8 | RLSA-2026:47104 | Aug 3, 2026 |
| firefox-esr · Debian 12.15 (bookworm) | 140.13.0esr-1~deb12u1 | DEBIAN-CVE-2026-15718 | Jul 23, 2026 |
| firefox-esr · Debian 13.5 (trixie) | 140.13.0esr-1~deb13u1 | DEBIAN-CVE-2026-15718 | Jul 23, 2026 |
| firefox-esr · Debian 14 | 140.13.0esr-1 | DEBIAN-CVE-2026-15718 | Jul 23, 2026 |
| firefox-x11 · RHEL 9 | 0:140.13.0-1.el9_8 | RHSA-2026:47104 | Aug 5, 2026 |
| firefox-x11 · almalinux 9 | 140.13.0-1.el9_8.alma.1 | ALSA-2026:47104 | Jul 28, 2026 |
| firefox-x11 · ol 9 | 0:140.13.0-1.0.1.el9_8 | ELSA-2026-47104 | Jul 29, 2026 |
| thunderbird · Debian 12.15 (bookworm) | 1:140.13.0esr-2~deb12u1 | DEBIAN-CVE-2026-15718 | Jul 23, 2026 |
| thunderbird · Debian 13.5 (trixie) | 1:140.13.0esr-2~deb13u1 | DEBIAN-CVE-2026-15718 | Jul 23, 2026 |
| thunderbird · Debian 14 | 1:140.13.0esr-1 | DEBIAN-CVE-2026-15718 | Jul 23, 2026 |
| thunderbird · RHEL 10 | 140.13.0-1.el10_0 | RHSA-2026:53445 | Aug 3, 2026 |
| thunderbird · RHEL 8 | 0:140.13.0-1.el8_10 | RHSA-2026:49922 | Aug 5, 2026 |
| thunderbird · RHEL 9 | 0:140.13.0-1.el9_8 | RHSA-2026:49921 | Aug 5, 2026 |
| thunderbird · almalinux 10 | 140.13.0-1.el10_2.alma.1 | ALSA-2026:49621 | Aug 3, 2026 |
| thunderbird · almalinux 8 | 140.13.0-1.el8_10.alma.1 | ALSA-2026:49922 | Aug 4, 2026 |
| thunderbird · almalinux 9 | 140.13.0-1.el9_8.alma.1 | ALSA-2026:49921 | Aug 4, 2026 |
| thunderbird · ol 10 | 0:140.13.0-1.0.1.el10_2 | ELSA-2026-49621 | Aug 3, 2026 |
| thunderbird · ol 8 | 0:140.13.0-1.0.1.el8_10 | ELSA-2026-49922 | Aug 4, 2026 |
| thunderbird · ol 9 | 0:140.13.0-1.0.1.el9_8 | ELSA-2026-49921 | Aug 4, 2026 |
| thunderbird · rocky 10 | 0:140.13.0-1.el10_2 | RLSA-2026:49621 | Aug 6, 2026 |
| thunderbird · rocky 8 | 0:140.13.0-1.el8_10 | RLSA-2026:49922 | Aug 6, 2026 |
| thunderbird · rocky 9 | 0:140.13.0-1.el9_8 | RLSA-2026:49921 | Aug 6, 2026 |
| No fix yet | |||
| Firefox Developer Edition (ach) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (af) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (an) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (ar) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (ast) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (az) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (be) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (bg) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (bn) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (br) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (bs) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (ca) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (ca-valencia) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (cak) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (cs) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (cy) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (da) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (de) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (dsb) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (el) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (en-CA) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (en-GB) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (eo) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (es-AR) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (es-CL) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (es-ES) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (es-MX) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (et) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (eu) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (fa) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (ff) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (fi) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (fr) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (fur) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (fy-NL) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (ga-IE) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (gd) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (gl) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (gn) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (gu-IN) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (he) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (hi-IN) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (hr) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (hsb) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (hu) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (hy-AM) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (ia) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (id) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (is) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (it) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (ja) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (ka) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (kab) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (kk) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (km) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (kn) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (ko) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (lij) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (lt) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (lv) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (mk) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (mr) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (ms) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (my) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (nb-NO) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (ne-NP) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (nl) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (nn-NO) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (oc) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (pa-IN) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (pl) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (pt-BR) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (pt-PT) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (rm) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (ro) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (ru) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (sc) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (sco) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (si) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (sk) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (sl) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (son) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (sq) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (sr) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (sv-SE) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (szl) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (ta) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (te) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (tg) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (th) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (tl) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (tr) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (trs) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (uk) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (ur) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (uz) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (vi) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (xh) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (zh-CN) (Windows apps) | No fix yet | no-fix | n/a |
| Firefox Developer Edition (zh-TW) (Windows apps) | No fix yet | no-fix | n/a |
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