CVE-2026-25704

UNKNOWN 0.0

Incomplete privilege drop for com.system76.CosmicGreeter.GetUserData

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

2th

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.

CWE	CWE-271 CWE-367
Vendor	pop-os
Product	cosmic-greeter
Published	Mar 30, 2026
Last Updated	Apr 16, 2026

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Affected Versions

pop-os / cosmic-greeter

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

References

NVD ↗ CVE.org ↗ EPSS Data ↗

bugzilla.suse.com: https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-25704 openwall.com: http://www.openwall.com/lists/oss-security/2026/04/16/3

Credits

Matthias Gerstner of SUSE