Name: CVE-2026-74952: Improper Privilege Management
Creator: Rapid7
Published: 2026-08-18T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-74952, CWE-269, CVSS 8.8, EPSS 0.00226

Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 154, Thunderbird 154, Firefox ESR 153.2, and Thunderbird 153.2.

CVSS Details

CVSS 3.1 Base Score: 8.8
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Mfsa2026 85	—	Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 153.2	Sep 1, 2026	Sep 1, 2026
Mozilla Thunderbird	—	Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 153.2	Sep 1, 2026	Sep 1, 2026

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CVSS Details

Covered by Rapid7

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