CVE-2025-11152

HIGH

Firefox < 143.0.3 - Buffer Overflow

Title source: llm
STIX 2.1

Description

Sandbox escape due to integer overflow in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 143.0.3.

References (2)

Core 2
Core References
Issue Tracking, Permissions Required
https://bugzilla.mozilla.org/show_bug.cgi?id=1987246

Scores

CVSS v3 8.6
EPSS 0.0025
EPSS Percentile 15.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-190
Status published
Products (2)
mozilla/firefox < 143.0.3
Mozilla/Firefox 143.0.3
Published Sep 30, 2025
Tracked Since Feb 18, 2026