CVE-2023-6873
Mozilla Firefox ESR and 3 others: Memory safety bugs present in Firefox 120.
CVE-2023-6873 is fixed in 106 products on 2 platforms, first by DEBIAN-CVE-2023-6873, released December 19, 2023. It is not reported as exploited. Patch Radar priority: High.
HighFixed on 2 platforms
CVSS
8.8
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0085
58th percentile
Memory safety bugs present in Firefox 120. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 121.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Mozilla Firefox (en-US) | 121.0 | Mozilla Firefox (en-US) 121.0 | Dec 20, 2023 |
| Mozilla Firefox ESR (ach) | 128.3.0 | Mozilla Firefox ESR (ach) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (af) | 128.3.0 | Mozilla Firefox ESR (af) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (an) | 128.3.0 | Mozilla Firefox ESR (an) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ar) | 128.3.0 | Mozilla Firefox ESR (ar) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ast) | 128.3.0 | Mozilla Firefox ESR (ast) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (az) | 128.3.0 | Mozilla Firefox ESR (az) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (be) | 128.3.0 | Mozilla Firefox ESR (be) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (bg) | 128.3.0 | Mozilla Firefox ESR (bg) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (bn) | 128.3.0 | Mozilla Firefox ESR (bn) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (br) | 128.3.0 | Mozilla Firefox ESR (br) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (bs) | 128.3.0 | Mozilla Firefox ESR (bs) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ca) | 128.3.0 | Mozilla Firefox ESR (ca) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ca-valencia) | 128.3.0 | Mozilla Firefox ESR (ca-valencia) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (cak) | 128.3.0 | Mozilla Firefox ESR (cak) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (cs) | 128.3.0 | Mozilla Firefox ESR (cs) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (cy) | 128.3.0 | Mozilla Firefox ESR (cy) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (da) | 128.3.0 | Mozilla Firefox ESR (da) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (de) | 128.3.0 | Mozilla Firefox ESR (de) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (dsb) | 128.3.0 | Mozilla Firefox ESR (dsb) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (el) | 128.3.0 | Mozilla Firefox ESR (el) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (en-CA) | 128.3.0 | Mozilla Firefox ESR (en-CA) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (en-GB) | 128.3.0 | Mozilla Firefox ESR (en-GB) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (en-US) | 128.3.0 | Mozilla Firefox ESR (en-US) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (eo) | 128.3.0 | Mozilla Firefox ESR (eo) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (es-AR) | 128.3.0 | Mozilla Firefox ESR (es-AR) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (es-CL) | 128.3.0 | Mozilla Firefox ESR (es-CL) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (es-ES) | 128.3.0 | Mozilla Firefox ESR (es-ES) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (es-MX) | 128.3.0 | Mozilla Firefox ESR (es-MX) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (et) | 128.3.0 | Mozilla Firefox ESR (et) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (eu) | 128.3.0 | Mozilla Firefox ESR (eu) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (fa) | 128.3.0 | Mozilla Firefox ESR (fa) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ff) | 128.3.0 | Mozilla Firefox ESR (ff) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (fi) | 128.3.0 | Mozilla Firefox ESR (fi) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (fr) | 128.3.0 | Mozilla Firefox ESR (fr) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (fur) | 128.3.0 | Mozilla Firefox ESR (fur) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (fy-NL) | 128.3.0 | Mozilla Firefox ESR (fy-NL) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ga-IE) | 128.3.0 | Mozilla Firefox ESR (ga-IE) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (gd) | 128.3.0 | Mozilla Firefox ESR (gd) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (gl) | 128.3.0 | Mozilla Firefox ESR (gl) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (gn) | 128.3.0 | Mozilla Firefox ESR (gn) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (gu-IN) | 128.3.0 | Mozilla Firefox ESR (gu-IN) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (he) | 128.3.0 | Mozilla Firefox ESR (he) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (hi-IN) | 128.3.0 | Mozilla Firefox ESR (hi-IN) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (hr) | 128.3.0 | Mozilla Firefox ESR (hr) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (hsb) | 128.3.0 | Mozilla Firefox ESR (hsb) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (hu) | 128.3.0 | Mozilla Firefox ESR (hu) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (hy-AM) | 128.3.0 | Mozilla Firefox ESR (hy-AM) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ia) | 128.3.0 | Mozilla Firefox ESR (ia) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (id) | 128.3.0 | Mozilla Firefox ESR (id) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (is) | 128.3.0 | Mozilla Firefox ESR (is) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (it) | 128.3.0 | Mozilla Firefox ESR (it) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ja) | 128.3.0 | Mozilla Firefox ESR (ja) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ka) | 128.3.0 | Mozilla Firefox ESR (ka) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (kab) | 128.3.0 | Mozilla Firefox ESR (kab) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (kk) | 128.3.0 | Mozilla Firefox ESR (kk) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (km) | 128.3.0 | Mozilla Firefox ESR (km) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (kn) | 128.3.0 | Mozilla Firefox ESR (kn) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ko) | 128.3.0 | Mozilla Firefox ESR (ko) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (lij) | 128.3.0 | Mozilla Firefox ESR (lij) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (lt) | 128.3.0 | Mozilla Firefox ESR (lt) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (lv) | 128.3.0 | Mozilla Firefox ESR (lv) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (mk) | 128.3.0 | Mozilla Firefox ESR (mk) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (mr) | 128.3.0 | Mozilla Firefox ESR (mr) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ms) | 128.3.0 | Mozilla Firefox ESR (ms) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (my) | 128.3.0 | Mozilla Firefox ESR (my) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (nb-NO) | 128.3.0 | Mozilla Firefox ESR (nb-NO) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ne-NP) | 128.3.0 | Mozilla Firefox ESR (ne-NP) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (nl) | 128.3.0 | Mozilla Firefox ESR (nl) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (nn-NO) | 128.3.0 | Mozilla Firefox ESR (nn-NO) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (oc) | 128.3.0 | Mozilla Firefox ESR (oc) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (pa-IN) | 128.3.0 | Mozilla Firefox ESR (pa-IN) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (pl) | 128.3.0 | Mozilla Firefox ESR (pl) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (pt-BR) | 128.3.0 | Mozilla Firefox ESR (pt-BR) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (pt-PT) | 128.3.0 | Mozilla Firefox ESR (pt-PT) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (rm) | 128.3.0 | Mozilla Firefox ESR (rm) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ro) | 128.3.0 | Mozilla Firefox ESR (ro) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ru) | 128.3.0 | Mozilla Firefox ESR (ru) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (sc) | 128.3.0 | Mozilla Firefox ESR (sc) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (sco) | 128.3.0 | Mozilla Firefox ESR (sco) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (si) | 128.3.0 | Mozilla Firefox ESR (si) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (sk) | 128.3.0 | Mozilla Firefox ESR (sk) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (sl) | 128.3.0 | Mozilla Firefox ESR (sl) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (son) | 128.3.0 | Mozilla Firefox ESR (son) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (sq) | 128.3.0 | Mozilla Firefox ESR (sq) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (sr) | 128.3.0 | Mozilla Firefox ESR (sr) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (sv-SE) | 128.3.0 | Mozilla Firefox ESR (sv-SE) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (szl) | 128.3.0 | Mozilla Firefox ESR (szl) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ta) | 128.3.0 | Mozilla Firefox ESR (ta) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (te) | 128.3.0 | Mozilla Firefox ESR (te) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (tg) | 128.3.0 | Mozilla Firefox ESR (tg) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (th) | 128.3.0 | Mozilla Firefox ESR (th) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (tl) | 128.3.0 | Mozilla Firefox ESR (tl) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (tr) | 128.3.0 | Mozilla Firefox ESR (tr) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (trs) | 128.3.0 | Mozilla Firefox ESR (trs) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (uk) | 128.3.0 | Mozilla Firefox ESR (uk) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (ur) | 128.3.0 | Mozilla Firefox ESR (ur) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (uz) | 128.3.0 | Mozilla Firefox ESR (uz) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (vi) | 128.3.0 | Mozilla Firefox ESR (vi) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (xh) | 128.3.0 | Mozilla Firefox ESR (xh) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (zh-CN) | 128.3.0 | Mozilla Firefox ESR (zh-CN) 128.3.0 | Oct 1, 2024 |
| Mozilla Firefox ESR (zh-TW) | 128.3.0 | Mozilla Firefox ESR (zh-TW) 128.3.0 | Oct 1, 2024 |
| Linux | |||
| firefox · Ubuntu 20.04 LTS (focal) | 121.0+build1-0ubuntu0.20.04.1 | firefox 121.0+build1-0ubuntu0.20.04.1 | Dec 19, 2023 |
| firefox-geckodriver · Ubuntu 20.04 LTS (focal) | 121.0+build1-0ubuntu0.20.04.1 | firefox-geckodriver 121.0+build1-0ubuntu0.20.04.1 | Dec 19, 2023 |
| firefox-mozsymbols · Ubuntu 20.04 LTS (focal) | 121.0+build1-0ubuntu0.20.04.1 | firefox-mozsymbols 121.0+build1-0ubuntu0.20.04.1 | Dec 19, 2023 |
| thunderbird · Debian 12.15 (bookworm) | 1:115.6.0-1~deb12u1 | DEBIAN-CVE-2023-6873 | Dec 19, 2023 |
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.