CVE-2025-49709 json
Memory corruption in canvas surfaces
published 2025-06-11 16 mo ago modified 2026-09-30 39 d ago also EUVD-2025-18101
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 52%
- public exploits
- 0
- none known
Summary
Certain canvas operations could have lead to memory corruption. This vulnerability was fixed in Firefox 139.0.4.
Patch / fix
- mozilla firefox 139.0.4
- firefox-esr openSUSE Tumbleweed 153.0-1.1
- MozillaFirefox openSUSE Tumbleweed 139.0.4-1.1
opensuse advisories openSUSE-SU-2026:11373-1openSUSE-SU-2025:15203-1
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 16 mo ago
Exploit prediction
0.67% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Mozilla Firefox
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
mozilla.org
/security/advisories/mfsa2025-47/
vendor-advisory
-
bugzilla.mozilla.org
/show_bug.cgi?id=1966083
permissions-required
Sources
- CVE List CVE-2025-49709
- NVD CVE-2025-49709
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.