🔐 CVE Alert

CVE-2025-10534

HIGH 8.1

Spoofing issue in the Site Permissions component

CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th

Spoofing issue in the Site Permissions component. This vulnerability was fixed in Firefox 143 and Thunderbird 143.

Vendor mozilla
Product firefox
Ecosystems
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=1665334 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-73/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-77/

Credits

Emma Zühlcke