High severity7.5NVD Advisory· Published Apr 21, 2026· Updated Jun 17, 2026
CVE-2026-6772
CVE-2026-6772
Description
Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
15- osv-coords9 versionspkg:apk/wolfi/firefoxpkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweedpkg:apk/chainguard/firefoxpkg:apk/chainguard/firefox-esrpkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweedpkg:rpm/almalinux/thunderbirdpkg:rpm/almalinux/firefoxpkg:rpm/almalinux/firefox-x11
< 140.10-r0+ 8 more
- (no CPE)range: < 140.10-r0
- (no CPE)range: < 140.9.1-1.1
- (no CPE)range: < 150.0-1.1
- (no CPE)range: < 140.10-r0
- (no CPE)range: < 140.10-r0
- (no CPE)range: < 153.0-1.1
- (no CPE)range: < 140.10.0-1.el10_1.alma.1
- (no CPE)range: < 140.10.0-1.el9_7.alma.1
- (no CPE)range: < 140.10.0-1.el9_7.alma.1
>=150+ 2 more
- (no CPE)range: >=150
- cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*range: <115.35.0
- cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*range: <150.0
>=150+ 1 more
- (no CPE)range: >=150
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*range: <140.10.0
Patches
Vulnerability mechanics
References
6- www.mozilla.org/security/advisories/mfsa2026-30/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2026-31/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2026-32/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2026-33/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2026-34/nvdVendor Advisory
- bugzilla.mozilla.org/show_bug.cginvdPermissions Required
News mentions
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