CVE-2025-49709

9.8 CRITICAL

Published: June 11, 2025 Modified: April 13, 2026

Description

Certain canvas operations could have lead to memory corruption. This vulnerability was fixed in Firefox 139.0.4.

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Patch Vendor Advisory Exploit Third Party Advisory

Source: security@mozilla.org

Permissions Required

Source: security@mozilla.org

Vendor Advisory

2 reference(s) from NVD

CVSS v3 Score

9.8 / 10.0

EPSS (Exploit Probability)

0.4%

61th percentile

Exploitation Status

Not in CISA KEV

CWE-787

mozilla