Riskcovery

CVE-2026-25704

Incomplete privilege drop for com.system76.CosmicGreeter.GetUserData

State
Published
Severity
5.8 Medium
Published
Mar 30, 2026
Updated
Apr 16, 2026
Reserved
Feb 5, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
4.05.8 MediumCVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:Nsuse

Weaknesses

  • CWE-271 Privilege Dropping / Lowering Errors
  • CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

Affected Products

ProductVersions
cosmic-greeterpop-os
  • ? to before https://github.com/pop-os/cosmic-greeter/pull/426Affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.