CVE-2025-5262
Mozilla Thunderbird ESR and 2 others: Double Free
CVE-2025-5262 is fixed in 133 products on 2 platforms, first by Mozilla Thunderbird (af) 139.0, released May 27, 2025. It is not reported as exploited. Patch Radar priority: High.
HighFixed on 2 platforms
CVSS
7.5
No vendor severity
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0046
40th percentile
A double-free could have occurred in `vpx_codec_enc_init_multi` after a failed allocation when initializing the encoder for WebRTC. This could have caused memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 139 and Thunderbird < 128.11.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Mozilla Thunderbird (af) | 139.0 | Mozilla Thunderbird (af) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (ar) | 139.0 | Mozilla Thunderbird (ar) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (ast) | 139.0 | Mozilla Thunderbird (ast) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (be) | 139.0 | Mozilla Thunderbird (be) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (bg) | 139.0 | Mozilla Thunderbird (bg) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (br) | 139.0 | Mozilla Thunderbird (br) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (ca) | 139.0 | Mozilla Thunderbird (ca) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (cak) | 139.0 | Mozilla Thunderbird (cak) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (cs) | 139.0 | Mozilla Thunderbird (cs) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (cy) | 139.0 | Mozilla Thunderbird (cy) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (da) | 139.0 | Mozilla Thunderbird (da) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (de) | 139.0 | Mozilla Thunderbird (de) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (dsb) | 139.0 | Mozilla Thunderbird (dsb) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (el) | 139.0 | Mozilla Thunderbird (el) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (en-CA) | 139.0 | Mozilla Thunderbird (en-CA) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (en-GB) | 139.0 | Mozilla Thunderbird (en-GB) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (en-US) | 139.0 | Mozilla Thunderbird (en-US) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (es-AR) | 139.0 | Mozilla Thunderbird (es-AR) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (es-ES) | 139.0 | Mozilla Thunderbird (es-ES) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (es-MX) | 139.0 | Mozilla Thunderbird (es-MX) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (et) | 139.0 | Mozilla Thunderbird (et) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (eu) | 139.0 | Mozilla Thunderbird (eu) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (fi) | 139.0 | Mozilla Thunderbird (fi) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (fr) | 139.0 | Mozilla Thunderbird (fr) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (fy-NL) | 139.0 | Mozilla Thunderbird (fy-NL) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (ga-IE) | 139.0 | Mozilla Thunderbird (ga-IE) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (gd) | 139.0 | Mozilla Thunderbird (gd) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (gl) | 139.0 | Mozilla Thunderbird (gl) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (he) | 139.0 | Mozilla Thunderbird (he) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (hr) | 139.0 | Mozilla Thunderbird (hr) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (hsb) | 139.0 | Mozilla Thunderbird (hsb) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (hu) | 139.0 | Mozilla Thunderbird (hu) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (hy-AM) | 139.0 | Mozilla Thunderbird (hy-AM) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (id) | 139.0 | Mozilla Thunderbird (id) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (is) | 139.0 | Mozilla Thunderbird (is) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (it) | 139.0 | Mozilla Thunderbird (it) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (ja) | 139.0 | Mozilla Thunderbird (ja) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (ka) | 139.0 | Mozilla Thunderbird (ka) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (kab) | 139.0 | Mozilla Thunderbird (kab) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (kk) | 139.0 | Mozilla Thunderbird (kk) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (ko) | 139.0 | Mozilla Thunderbird (ko) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (lt) | 139.0 | Mozilla Thunderbird (lt) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (lv) | 139.0 | Mozilla Thunderbird (lv) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (ms) | 139.0 | Mozilla Thunderbird (ms) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (nb-NO) | 139.0 | Mozilla Thunderbird (nb-NO) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (nl) | 139.0 | Mozilla Thunderbird (nl) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (nn-NO) | 139.0 | Mozilla Thunderbird (nn-NO) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (pa-IN) | 139.0 | Mozilla Thunderbird (pa-IN) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (pl) | 139.0 | Mozilla Thunderbird (pl) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (pt-BR) | 139.0 | Mozilla Thunderbird (pt-BR) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (pt-PT) | 139.0 | Mozilla Thunderbird (pt-PT) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (rm) | 139.0 | Mozilla Thunderbird (rm) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (ro) | 139.0 | Mozilla Thunderbird (ro) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (ru) | 139.0 | Mozilla Thunderbird (ru) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (sk) | 139.0 | Mozilla Thunderbird (sk) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (sl) | 139.0 | Mozilla Thunderbird (sl) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (sq) | 139.0 | Mozilla Thunderbird (sq) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (sr) | 139.0 | Mozilla Thunderbird (sr) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (sv-SE) | 139.0 | Mozilla Thunderbird (sv-SE) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (th) | 139.0 | Mozilla Thunderbird (th) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (tr) | 139.0 | Mozilla Thunderbird (tr) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (uk) | 139.0 | Mozilla Thunderbird (uk) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (uz) | 139.0 | Mozilla Thunderbird (uz) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (vi) | 139.0 | Mozilla Thunderbird (vi) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (zh-CN) | 139.0 | Mozilla Thunderbird (zh-CN) 139.0 | May 27, 2025 |
| Mozilla Thunderbird (zh-TW) | 139.0 | Mozilla Thunderbird (zh-TW) 139.0 | May 27, 2025 |
| Mozilla Thunderbird ESR (af) | 140.1.1 | Mozilla Thunderbird ESR (af) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (ar) | 140.1.1 | Mozilla Thunderbird ESR (ar) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (ast) | 140.1.1 | Mozilla Thunderbird ESR (ast) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (be) | 140.1.1 | Mozilla Thunderbird ESR (be) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (bg) | 140.1.1 | Mozilla Thunderbird ESR (bg) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (br) | 140.1.1 | Mozilla Thunderbird ESR (br) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (ca) | 140.1.1 | Mozilla Thunderbird ESR (ca) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (cak) | 140.1.1 | Mozilla Thunderbird ESR (cak) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (cs) | 140.1.1 | Mozilla Thunderbird ESR (cs) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (cy) | 140.1.1 | Mozilla Thunderbird ESR (cy) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (da) | 140.1.1 | Mozilla Thunderbird ESR (da) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (de) | 140.1.1 | Mozilla Thunderbird ESR (de) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (dsb) | 140.1.1 | Mozilla Thunderbird ESR (dsb) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (el) | 140.1.1 | Mozilla Thunderbird ESR (el) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (en-CA) | 140.1.1 | Mozilla Thunderbird ESR (en-CA) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (en-GB) | 140.1.1 | Mozilla Thunderbird ESR (en-GB) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (en-US) | 140.1.1 | Mozilla Thunderbird ESR (en-US) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (es-AR) | 140.1.1 | Mozilla Thunderbird ESR (es-AR) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (es-ES) | 140.1.1 | Mozilla Thunderbird ESR (es-ES) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (es-MX) | 140.1.1 | Mozilla Thunderbird ESR (es-MX) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (et) | 140.1.1 | Mozilla Thunderbird ESR (et) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (eu) | 140.1.1 | Mozilla Thunderbird ESR (eu) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (fi) | 140.1.1 | Mozilla Thunderbird ESR (fi) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (fr) | 140.1.1 | Mozilla Thunderbird ESR (fr) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (fy-NL) | 140.1.1 | Mozilla Thunderbird ESR (fy-NL) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (ga-IE) | 140.1.1 | Mozilla Thunderbird ESR (ga-IE) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (gd) | 140.1.1 | Mozilla Thunderbird ESR (gd) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (gl) | 140.1.1 | Mozilla Thunderbird ESR (gl) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (he) | 140.1.1 | Mozilla Thunderbird ESR (he) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (hr) | 140.1.1 | Mozilla Thunderbird ESR (hr) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (hsb) | 140.1.1 | Mozilla Thunderbird ESR (hsb) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (hu) | 140.1.1 | Mozilla Thunderbird ESR (hu) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (hy-AM) | 140.1.1 | Mozilla Thunderbird ESR (hy-AM) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (id) | 140.1.1 | Mozilla Thunderbird ESR (id) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (is) | 140.1.1 | Mozilla Thunderbird ESR (is) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (it) | 140.1.1 | Mozilla Thunderbird ESR (it) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (ja) | 140.1.1 | Mozilla Thunderbird ESR (ja) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (ka) | 140.1.1 | Mozilla Thunderbird ESR (ka) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (kab) | 140.1.1 | Mozilla Thunderbird ESR (kab) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (kk) | 140.1.1 | Mozilla Thunderbird ESR (kk) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (ko) | 140.1.1 | Mozilla Thunderbird ESR (ko) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (lt) | 140.1.1 | Mozilla Thunderbird ESR (lt) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (lv) | 140.1.1 | Mozilla Thunderbird ESR (lv) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (ms) | 140.1.1 | Mozilla Thunderbird ESR (ms) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (nb-NO) | 140.1.1 | Mozilla Thunderbird ESR (nb-NO) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (nl) | 140.1.1 | Mozilla Thunderbird ESR (nl) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (nn-NO) | 140.1.1 | Mozilla Thunderbird ESR (nn-NO) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (pa-IN) | 140.1.1 | Mozilla Thunderbird ESR (pa-IN) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (pl) | 140.1.1 | Mozilla Thunderbird ESR (pl) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (pt-BR) | 140.1.1 | Mozilla Thunderbird ESR (pt-BR) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (pt-PT) | 140.1.1 | Mozilla Thunderbird ESR (pt-PT) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (rm) | 140.1.1 | Mozilla Thunderbird ESR (rm) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (ro) | 140.1.1 | Mozilla Thunderbird ESR (ro) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (ru) | 140.1.1 | Mozilla Thunderbird ESR (ru) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (sk) | 140.1.1 | Mozilla Thunderbird ESR (sk) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (sl) | 140.1.1 | Mozilla Thunderbird ESR (sl) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (sq) | 140.1.1 | Mozilla Thunderbird ESR (sq) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (sr) | 140.1.1 | Mozilla Thunderbird ESR (sr) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (sv-SE) | 140.1.1 | Mozilla Thunderbird ESR (sv-SE) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (th) | 140.1.1 | Mozilla Thunderbird ESR (th) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (tr) | 140.1.1 | Mozilla Thunderbird ESR (tr) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (uk) | 140.1.1 | Mozilla Thunderbird ESR (uk) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (uz) | 140.1.1 | Mozilla Thunderbird ESR (uz) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (vi) | 140.1.1 | Mozilla Thunderbird ESR (vi) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (zh-CN) | 140.1.1 | Mozilla Thunderbird ESR (zh-CN) 140.1.1 | Aug 5, 2025 |
| Mozilla Thunderbird ESR (zh-TW) | 140.1.1 | Mozilla Thunderbird ESR (zh-TW) 140.1.1 | Aug 5, 2025 |
| Linux | |||
| MozillaThunderbird · opensuse-leap 15.6 | 128.11.0-150200.8.221.1 | SUSE-SU-2025:01946-1 | Jun 13, 2025 |
| MozillaThunderbird · sles 15.6 | 128.11.0-150200.8.221.1 | SUSE-SU-2025:01946-1 | Jun 13, 2025 |
| MozillaThunderbird · sles 15.7 | 128.11.0-150200.8.221.1 | SUSE-SU-2025:01946-1 | Jun 13, 2025 |
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