CVE-2026-84122
5.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Summary
Use-after-free in the Audio/Video component. This vulnerability was fixed in Firefox 155, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Mozilla | Firefox | 140.15 <= 140.* | unaffected |
| Mozilla | Firefox | 153.2 <= 153.* | unaffected |
| Mozilla | Firefox | 155 <= * | unaffected |
| Mozilla | Thunderbird | 140.15 <= 140.* | unaffected |
| Mozilla | Thunderbird | 153.2 <= 153.* | unaffected |
| Mozilla | Thunderbird | 155 <= * | unaffected |
Weaknesses
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2059965
- https://www.mozilla.org/security/advisories/mfsa2026-82/
- https://www.mozilla.org/security/advisories/mfsa2026-84/
- https://www.mozilla.org/security/advisories/mfsa2026-85/
- https://www.mozilla.org/security/advisories/mfsa2026-86/
- https://www.mozilla.org/security/advisories/mfsa2026-87/
- https://www.mozilla.org/security/advisories/mfsa2026-88/
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