Vulnerabilities CVE-2026-61897

CVE-2026-61897

High

Open

TLP:CLEAR

accountsservice: incomplete privilege drop when running Ubuntu-specific language helper scripts

NVD CVE.org

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Description

An Ubuntu-specific patch to AccountsService before 23.13.9-8ubuntu7 only partially drops privileges before launching language helper scripts. It changes the effective UID/GID to the target user but leaves the real UID as 0 (root). A shell spawned by a helper script inherits ruid=0 and may reset its effective UID to root, enabling local privilege escalation.

Details

CVSS Score: 7.8
CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Confidence: 90%
Published: Aug 20, 2026
Last Modified: Aug 20, 2026

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