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CVE Vulnerability Details :
CVE-2026-2447
PUBLISHED
More InfoOfficial Page
Assigner-mozilla
Assigner Org ID-f16b083a-5664-49f3-a51e-8d479e5ed7fe
View Known Exploited Vulnerability (KEV) details
Published At-16 Feb, 2026 | 14:13
Updated At-16 Feb, 2026 | 15:18
Rejected At-
▼CVE Numbering Authority (CNA)
Heap buffer overflow in libvpx

Heap buffer overflow in libvpx. This vulnerability affects Firefox < 147.0.4, Firefox ESR < 140.7.1, Firefox ESR < 115.32.1, Thunderbird < 140.7.2, and Thunderbird < 147.0.2.

Affected Products
Vendor
Mozilla CorporationMozilla
Product
Firefox
Versions
Affected
  • From unspecified before 147.0.4 (custom)
Vendor
Mozilla CorporationMozilla
Product
Firefox ESR
Versions
Affected
  • From unspecified before 140.7.1 (custom)
Vendor
Mozilla CorporationMozilla
Product
Firefox ESR
Versions
Affected
  • From unspecified before 115.32.1 (custom)
Vendor
Mozilla CorporationMozilla
Product
Thunderbird
Versions
Affected
  • From unspecified before 140.7.2 (custom)
Vendor
Mozilla CorporationMozilla
Product
Thunderbird
Versions
Affected
  • From unspecified before 147.0.2 (custom)
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
jayjayjazz
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://bugzilla.mozilla.org/show_bug.cgi?id=2014390
N/A
https://www.mozilla.org/security/advisories/mfsa2026-10/
N/A
https://www.mozilla.org/security/advisories/mfsa2026-11/
N/A
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=2014390
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-10/
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2026-11/
Resource: N/A
Details not found