CVE-2025-49709

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

CVSS 3.1

9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.7% chance of exploitation in the next 30 days; higher than 51% of CVEs (scores of 2026-10-25)

CWE

CWE-787

Published

2025-06-11

Modified

2026-09-30

Record from

the NVD, synced 2026-10-19

Affected

• mozilla:firefox

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1966083
• https://www.mozilla.org/security/advisories/mfsa2025-47/

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