by Kastro
Paper/Archive/CVE-2025-49709

CVE-2025-49709

Mozilla Firefox — Memory corruption in canvas surfaces

EPSS 0.7%CVSS 9.8
critical.is priorityof 100
40
CVSS 9.8 (ADP)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 51.7.517 × 2010.3No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

Affected

ProductAffectedFixed inSource
Firefoxsee advisory139.0.4CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refbugzilla.mozilla.org/show_bug.cgi?id=1966083refmozilla.org/security/advisories/mfsa2025-47