🔐 CVE Alert

CVE-2026-7323

UNKNOWN 0.0

Memory safety bugs fixed in Firefox ESR 140.10.1, Thunderbird ESR 140.10.1, Firefox 150.0.1 and Thunderbird 150.0.1

CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th

Memory safety bugs present in Firefox ESR 140.10.0, Thunderbird ESR 140.10.0, Firefox 150.0.0 and Thunderbird 150.0.0. 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 150.0.1 and Firefox ESR 140.10.1.

Vendor mozilla
Product firefox
Ecosystems
Industries
Technology
Published Apr 28, 2026
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Affected Versions

Mozilla / Firefox
All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗
bugzilla.mozilla.org: https://bugzilla.mozilla.org/buglist.cgi?bug_id=2028537%2C2029911%2C2031121%2C2033602 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-35/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-36/

Credits

Ryan Hunt, Steve Fink and the Mozilla Fuzzing Team