CVE-2025-49709 — Out-of-bounds Write in Mozilla Firefox

CWE-787 — Out-of-bounds Write6 documents6 sources
Severity
9.8CRITICALNVD
EPSS
0.4%
top 38.69%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Mozilla Firefox
Timeline
PublishedJun 11

Description

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

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages1 packages

▶NVDmozilla/firefox< 139.0.4

🔴Vulnerability Details

3
CVEList
Memory corruption in canvas surfaces↗2025-06-11
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GHSA
GHSA-p5g7-573c-m74m: Certain canvas operations could have lead to memory corruption↗2025-06-11
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OSV
CVE-2025-49709: Certain canvas operations could have lead to memory corruption↗2025-06-11
▶

📋Vendor Advisories

2
Debian
CVE-2025-49709: firefox - Certain canvas operations could have lead to memory corruption. This vulnerabili...↗2025
▶
Mozilla
Mozilla Foundation Security Advisory 2025-47: CVE-2025-49709↗
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CVE-2025-49709 — Out-of-bounds Write in Mozilla Firefox | cvebase