CVE-2026-25704

Incomplete privilege drop for com.system76.CosmicGreeter.GetUserData

Title source: cna

Description

A Privilege Dropping / Lowering Errors/Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in cosmic-greeter can allow an attacker to regain privileges that should have been dropped and abuse them in the racy checking logic. This issue affects cosmic-greeter before https://github.Com/pop-os/cosmic-greeter/pull/426.

References (1)

https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-25704

Scores

EPSS 0.0001

EPSS Percentile 1.6%

Details

CWE

CWE-271 CWE-367

Status published

Products (1)

pop-os/cosmic-greeter ? - https://github.com/pop-os/cosmic-greeter/pull/426

Published Mar 30, 2026

Tracked Since Mar 30, 2026