CVE-2026-6759

EUVD-2026-24100
Use-after-free in the Widget: Cocoa component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Debian logo
Debian Releases
Debian Product
Codename
firefox
sid
149.0.2-1
fixed
firefox-esr
bookworm
128.14.0esr-1~deb12u1
fixed
bookworm (security)
140.9.1esr-1~deb12u1
fixed
bullseye
115.14.0esr-1~deb11u1
fixed
bullseye (security)
140.9.1esr-1~deb11u1
fixed
forky
140.9.1esr-1
fixed
sid
140.9.1esr-1
fixed
trixie
140.8.0esr-1~deb13u1
fixed
trixie (security)
140.9.1esr-1~deb13u1
fixed
Common Weakness Enumeration
References
https://bugzilla.mozilla.org/show_bug.cgi?id=2016164
https://www.mozilla.org/security/advisories/mfsa2026-30/
https://www.mozilla.org/security/advisories/mfsa2026-32/