An attacker with control over a content process could potentially leverage the privileged UITour actor to leak sensitive information or escalate privileges. This vulnerability was fixed in Firefox 138 and Thunderbird 138.
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Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2025-04-29. NVD baseline CVSS 7.1; sources differ by 0.0.
An attacker with control over a content process could potentially leverage the privileged UITour actor to leak sensitive information or escalate privileges. This vulnerability was fixed in Firefox 138 and Thunderbird 138.
April 29, 2025
April 13, 2026
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | xul-ext-lightning (1:140.7.1+build1-0ubuntu0.22.04.1) @ jammy | 2026-05-21 | ubuntu |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
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Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
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Explore the affected products and dependency analysis for CVE-2025-4085
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ubuntu
CWE-269