🔐 CVE Alert

CVE-2025-8044

CRITICAL 9.8

Memory safety bugs fixed in Firefox 141 and Thunderbird 141

CVSS Score
9.8
EPSS Score
0.1%
EPSS Percentile
27th

Memory safety bugs present in Firefox 140 and Thunderbird 140. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 141 and Thunderbird 141.

Vendor mozilla
Product firefox
Ecosystems
Industries
Technology
Published Jul 22, 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/buglist.cgi?bug_id=1933572%2C1971116 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-56/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-61/

Credits

Akmat Suleimanov, Andrew McCreight