CVE-2026-25704 — Incomplete privilege drop for com.system76.CosmicGreeter.GetUserData
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 …
Published: 2026-03-30 · CVSS: 5.8 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7