CVE-2025-11152

Sandbox escape due to integer overflow in the Graphics: Canvas2D component

HIGH
8.6
CVSS Score
Published: September 30, 2025 at 12:49 PM UTC
Updated: June 17, 2026 at 08:29 AM UTC
1 product affected across 1 vendorFirefox

Using Firefox by Mozilla?

Get instant alerts when new vulnerabilities affect Firefox - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH8.6
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

This vulnerability affects Firefox < 143.0.3.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 143.0.3
Vendor states this is fixed in 143.0.3 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

Issue TrackingPermissions Required
Source: cverecord
https://bugzilla.mozilla.org/show_bug.cgi?id=1987246

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.6HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
HIGH
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-190

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card