CVE-2025-5689

8.5 highEPSS 0.3%

A flaw was found in the temporary user record that authd uses in the pre-auth NSS. As a result, a user login for the first time will be considered to be part of the root group in the context of that SSH session.

Severity

CVSS 3.1

8.5 high

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 22% of CVEs (scores of 2026-10-31)
CWE: CWE-269
Published: 2025-06-16
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

canonical:authd

Packages (OSV)

Advisory	Ecosystem	Package	Affected	Fixed in
GHSA-g8qw-mgjx-rwjr	Go	github.com/ubuntu/authd	<0.5.4	0.5.4
GO-2025-3762	Go	github.com/ubuntu/authd	<0.5.4	0.5.4

References

https://github.com/ubuntu/authd/security/advisories/GHSA-g8qw-mgjx-rwjr

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