CVE-2026-121842

EUVD-2026-120058
Privilege escalation in the Reader View component in Firefox for iOS. This vulnerability was fixed in Firefox for iOS 160.0.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.8 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
References
https://bugzilla.mozilla.org/show_bug.cgi?id=2076233
https://www.mozilla.org/security/advisories/mfsa2026-124/