Medium severity5.3NVD Advisory· Published Apr 21, 2026· Updated Jun 17, 2026
CVE-2026-6777
CVE-2026-6777
Description
Other issue in the Networking: DNS component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
9- osv-coords5 versionspkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweedpkg:apk/chainguard/firefoxpkg:apk/chainguard/firefox-esrpkg:apk/wolfi/firefoxpkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweed
< 150.0-1.1+ 4 more
- (no CPE)range: < 150.0-1.1
- (no CPE)range: < 150-r0
- (no CPE)range: < 0
- (no CPE)range: < 150-r0
- (no CPE)range: < 153.0-1.1
>=150+ 1 more
- (no CPE)range: >=150
- cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*range: <150.0
>=150+ 1 more
- (no CPE)range: >=150
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*range: <150.0
Patches
Vulnerability mechanics
References
3- www.mozilla.org/security/advisories/mfsa2026-30/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2026-33/nvdVendor Advisory
- bugzilla.mozilla.org/show_bug.cginvdPermissions Required
News mentions
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