CVE-2026-25704
Medium
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.
SeverityMedium
CVSS5.8
Exploit probability—
ProductPop-os Cosmic-greeter
PublishedMar 30, 2026
First seenMar 30, 2026
Weakness typeCWE-271CWE-271CWE-367CWE-367
How to fix
Update
- pop-os cosmic-greeterhttps://github.com/pop-os/cosmic-greeter/pull/426 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| pop-os cosmic-greeter | ? ≤ v < https://github.com/pop-os/cosmic-greeter/pull/426 | https://github.com/pop-os/cosmic-greeter/pull/426 |
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