VulnerabilityModified
CVE-2025-10533
Integer overflow in the SVG component.
HIGH 8.8EPSS 0.74%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.74%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Integer overflow in the SVG component. This vulnerability was fixed in Firefox 143, Firefox ESR 115.28, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.74% probability · 52th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- mozilla/firefox · mozilla/thunderbird
- Source
- security@mozilla.org
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1980788Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2025-73/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-74/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-75/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-77/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-78/Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2025/09/msg00026.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.