CVE-2026-25704CWE-271CWE-367
Incomplete privilege drop for com.system76.CosmicGreeter.GetUserData
Medium · published March 30, 2026
What it is
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.
The record
Technical detail
- CVSS v4.0
- 5.8 · MEDIUM
- Vector
- CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
- EPSS
- 0.00088 · 0.4th percentile
- Weaknesses
- CWE-271 · Privilege Dropping / Lowering Errors; CWE-367 · Time-of-check Time-of-use (TOCTOU) Race Condition
- Published
- 2026-03-30T07:44Z
EPSS history
Timeline