CVE-2026-16394
Mitigation bypass in the DOM: Security component
CVE-2026-16394 is fixed in 211 products on 3 platforms, first by Mozilla Firefox 153.0, released July 15, 2026. 100 other affected products have no fix yet. It is not reported as exploited. Patch Radar priority: Urgent.
UrgentFixed on 3 platforms
CVSS
9.1
No vendor severity
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0043
37th percentile
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
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) | 153.0 | Mozilla Firefox (ach) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (af) | 153.0 | Mozilla Firefox (af) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (an) | 153.0 | Mozilla Firefox (an) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (ar) | 153.0 | Mozilla Firefox (ar) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (ast) | 153.0 | Mozilla Firefox (ast) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (az) | 153.0 | Mozilla Firefox (az) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (be) | 153.0 | Mozilla Firefox (be) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (bg) | 153.0 | Mozilla Firefox (bg) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (bn) | 153.0 | Mozilla Firefox (bn) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (br) | 153.0 | Mozilla Firefox (br) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (bs) | 153.0 | Mozilla Firefox (bs) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (ca) | 153.0 | Mozilla Firefox (ca) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (ca-valencia) | 153.0 | Mozilla Firefox (ca-valencia) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (cak) | 153.0 | Mozilla Firefox (cak) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (cs) | 153.0 | Mozilla Firefox (cs) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (cy) | 153.0 | Mozilla Firefox (cy) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (da) | 153.0 | Mozilla Firefox (da) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (de) | 153.0 | Mozilla Firefox (de) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (dsb) | 153.0 | Mozilla Firefox (dsb) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (el) | 153.0 | Mozilla Firefox (el) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (en-CA) | 153.0 | Mozilla Firefox (en-CA) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (en-GB) | 153.0 | Mozilla Firefox (en-GB) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (en-US) | 153.0 | Mozilla Firefox (en-US) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (eo) | 153.0 | Mozilla Firefox (eo) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (es-AR) | 153.0 | Mozilla Firefox (es-AR) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (es-CL) | 153.0 | Mozilla Firefox (es-CL) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (es-ES) | 153.0 | Mozilla Firefox (es-ES) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (es-MX) | 153.0 | Mozilla Firefox (es-MX) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (et) | 153.0 | Mozilla Firefox (et) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (eu) | 153.0 | Mozilla Firefox (eu) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (fa) | 153.0 | Mozilla Firefox (fa) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (ff) | 153.0 | Mozilla Firefox (ff) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (fi) | 153.0 | Mozilla Firefox (fi) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (fr) | 153.0 | Mozilla Firefox (fr) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (fur) | 153.0 | Mozilla Firefox (fur) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (fy-NL) | 153.0 | Mozilla Firefox (fy-NL) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (ga-IE) | 153.0 | Mozilla Firefox (ga-IE) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (gd) | 153.0 | Mozilla Firefox (gd) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (gl) | 153.0 | Mozilla Firefox (gl) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (gn) | 153.0 | Mozilla Firefox (gn) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (gu-IN) | 153.0 | Mozilla Firefox (gu-IN) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (he) | 153.0 | Mozilla Firefox (he) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (hi-IN) | 153.0 | Mozilla Firefox (hi-IN) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (hr) | 153.0 | Mozilla Firefox (hr) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (hsb) | 153.0 | Mozilla Firefox (hsb) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (hu) | 153.0 | Mozilla Firefox (hu) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (hy-AM) | 153.0 | Mozilla Firefox (hy-AM) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (ia) | 153.0 | Mozilla Firefox (ia) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (id) | 153.0 | Mozilla Firefox (id) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (is) | 153.0 | Mozilla Firefox (is) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (it) | 153.0 | Mozilla Firefox (it) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (ja) | 153.0 | Mozilla Firefox (ja) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (ka) | 153.0 | Mozilla Firefox (ka) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (kab) | 153.0 | Mozilla Firefox (kab) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (kk) | 153.0 | Mozilla Firefox (kk) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (km) | 153.0 | Mozilla Firefox (km) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (kn) | 153.0 | Mozilla Firefox (kn) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (ko) | 153.0 | Mozilla Firefox (ko) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (lij) | 153.0 | Mozilla Firefox (lij) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (lt) | 153.0 | Mozilla Firefox (lt) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (lv) | 153.0 | Mozilla Firefox (lv) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (mk) | 153.0 | Mozilla Firefox (mk) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (mr) | 153.0 | Mozilla Firefox (mr) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (ms) | 153.0 | Mozilla Firefox (ms) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (my) | 153.0 | Mozilla Firefox (my) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (nb-NO) | 153.0 | Mozilla Firefox (nb-NO) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (ne-NP) | 153.0 | Mozilla Firefox (ne-NP) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (nl) | 153.0 | Mozilla Firefox (nl) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (nn-NO) | 153.0 | Mozilla Firefox (nn-NO) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (oc) | 153.0 | Mozilla Firefox (oc) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (pa-IN) | 153.0 | Mozilla Firefox (pa-IN) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (pl) | 153.0 | Mozilla Firefox (pl) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (pt-BR) | 153.0 | Mozilla Firefox (pt-BR) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (pt-PT) | 153.0 | Mozilla Firefox (pt-PT) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (rm) | 153.0 | Mozilla Firefox (rm) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (ro) | 153.0 | Mozilla Firefox (ro) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (ru) | 153.0 | Mozilla Firefox (ru) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (sc) | 153.0 | Mozilla Firefox (sc) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (sco) | 153.0 | Mozilla Firefox (sco) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (si) | 153.0 | Mozilla Firefox (si) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (sk) | 153.0 | Mozilla Firefox (sk) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (sl) | 153.0 | Mozilla Firefox (sl) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (son) | 153.0 | Mozilla Firefox (son) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (sq) | 153.0 | Mozilla Firefox (sq) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (sr) | 153.0 | Mozilla Firefox (sr) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (sv-SE) | 153.0 | Mozilla Firefox (sv-SE) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (szl) | 153.0 | Mozilla Firefox (szl) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (ta) | 153.0 | Mozilla Firefox (ta) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (te) | 153.0 | Mozilla Firefox (te) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (tg) | 153.0 | Mozilla Firefox (tg) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (th) | 153.0 | Mozilla Firefox (th) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (tl) | 153.0 | Mozilla Firefox (tl) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (tr) | 153.0 | Mozilla Firefox (tr) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (trs) | 153.0 | Mozilla Firefox (trs) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (uk) | 153.0 | Mozilla Firefox (uk) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (ur) | 153.0 | Mozilla Firefox (ur) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (uz) | 153.0 | Mozilla Firefox (uz) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (vi) | 153.0 | Mozilla Firefox (vi) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (xh) | 153.0 | Mozilla Firefox (xh) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (zh-CN) | 153.0 | Mozilla Firefox (zh-CN) 153.0 | Jul 21, 2026 |
| Mozilla Firefox (zh-TW) | 153.0 | Mozilla Firefox (zh-TW) 153.0 | Jul 21, 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 | 153.0 | Mozilla Firefox 153.0 | Jul 15, 2026 |
| Linux | |||
| MozillaFirefox · opensuse-leap 16.0 | 153.1.0-160000.1.2 | OPENSUSE-SU-2026:21713-1 | Aug 31, 2026 |
| MozillaFirefox · sles 15.6 | 153.2.0-150400.157.5.1 | SUSE-SU-2026:4156-1 | Sep 14, 2026 |
| MozillaFirefox · sles 15.7 | 153.2.0-150400.157.5.1 | SUSE-SU-2026:4156-1 | Sep 14, 2026 |
| MozillaFirefox · sles 16.0 | 153.1.0-160000.1.1 | SUSE-SU-2026:23590-1 | Aug 31, 2026 |
| MozillaFirefox-branding-SLE · sles 15.6 | 153-150400.14.3.1 | SUSE-SU-2026:4156-1 | Sep 14, 2026 |
| MozillaFirefox-branding-SLE · sles 15.7 | 153-150400.14.3.1 | SUSE-SU-2026:4156-1 | Sep 14, 2026 |
| MozillaFirefox-branding-SLE · sles 16.0 | 153-160000.1.1 | SUSE-SU-2026:23590-1 | Aug 31, 2026 |
| MozillaThunderbird · sles 15.7 | 153.2.0-150400.13.3.1 | SUSE-SU-2026:4268-1 | Sep 18, 2026 |
| mozilla-nspr · opensuse-leap 16.0 | 4.39-160000.1.1 | OPENSUSE-SU-2026:21713-1 | Aug 31, 2026 |
| mozilla-nspr · sles 15.6 | 4.39-150400.12.3.1 | SUSE-SU-2026:4156-1 | Sep 14, 2026 |
| mozilla-nspr · sles 15.7 | 4.39-150400.12.3.1 | SUSE-SU-2026:4156-1 | Sep 14, 2026 |
| mozilla-nspr · sles 16.0 | 4.39-160000.1.1 | SUSE-SU-2026:23590-1 | Aug 31, 2026 |
| mozilla-nss · opensuse-leap 16.0 | 3.125-160000.1.1 | OPENSUSE-SU-2026:21713-1 | Aug 31, 2026 |
| mozilla-nss · sles 15.6 | 3.125-150400.3.74.1 | SUSE-SU-2026:4156-1 | Sep 14, 2026 |
| mozilla-nss · sles 15.7 | 3.125-150400.3.74.1 | SUSE-SU-2026:4156-1 | Sep 14, 2026 |
| mozilla-nss · sles 16.0 | 3.125-160000.1.1 | SUSE-SU-2026:23590-1 | Aug 31, 2026 |
| rust-cbindgen · opensuse-leap 16.0 | 0.29.4+git0-160000.1.1 | OPENSUSE-SU-2026:21713-1 | Aug 31, 2026 |
| rust-cbindgen · sles 16.0 | 0.29.4+git0-160000.1.1 | SUSE-SU-2026:23590-1 | Aug 31, 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 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.