CVE-2026-0880

HIGH

Firefox < 115.32.0 and 140.7-147.0 - Sandbox Escape via Graphics Integer Overflow

Title source: llm
STIX 2.1

Description

Sandbox escape due to integer overflow in the Graphics component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

References (6)

Core 6

Scores

CVSS v3 8.8
EPSS 0.0046
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-190
Status published
Products (9)
mozilla/firefox < 115.32.0
mozilla/firefox < 147.0
Mozilla/Firefox 115.32 - 115.*
Mozilla/Firefox 140.7 - 140.*
Mozilla/Firefox 147
mozilla/thunderbird < 140.7.0
mozilla/thunderbird < 147.0
Mozilla/Thunderbird 140.7 - 140.*
Mozilla/Thunderbird 147
Published Jan 13, 2026
Tracked Since Feb 18, 2026