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An attacker with control over a content process could potentially leverage the privileged UITour actor to leak sensitive information or escalate privileges. This vulnerability affects Firefox < 138 and Thunderbird < 138.
Reserved 2025-04-29 | Published 2025-04-29 | Updated 2025-05-02 | Assigner mozillaPotential information leakage and privilege escalation in UITour actor
Andrew McCreight
bugzilla.mozilla.org/show_bug.cgi?id=1915280
www.mozilla.org/security/advisories/mfsa2025-28/
www.mozilla.org/security/advisories/mfsa2025-31/
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