CVE-2025-10533

HIGH 8.8

Integer overflow in the SVG component

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

Vendor	mozilla
Product	firefox
Ecosystems	Browser JavaScript
Industries	Technology
Published	Sep 16, 2025
Last Updated	Apr 13, 2026

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Affected Versions

Mozilla / Firefox

All versions affected

Mozilla / Thunderbird

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗

bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=1980788 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-73/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-74/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-75/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-77/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-78/ lists.debian.org: https://lists.debian.org/debian-lts-announce/2025/09/msg00026.html

Credits

Andrew Creskey