CVE-2026-2447

HIGH

Firefox < 115.32.1, 140.7.1-140.*, < 147.0.4 and Thunderbird < 140.7.2, 147.0.2 - Heap-based Buffer Overflow in libvpx

Title source: llm
STIX 2.1

Description

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

References (4)

Core 4

Scores

CVSS v3 8.8
EPSS 0.0045
EPSS Percentile 35.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-122
Status published
Products (8)
mozilla/firefox < 115.32.1
mozilla/firefox < 147.0.4
Mozilla/Firefox 115.32.1 - 115.*
Mozilla/Firefox 140.7.1 - 140.*
Mozilla/Firefox 147.0.4
mozilla/thunderbird < 140.7.2
Mozilla/Thunderbird 140.7.2 - 140.*
Mozilla/Thunderbird 147.0.2
Published Feb 16, 2026
Tracked Since Feb 18, 2026