CVE-2025-5689 json
Improper Permission Management in SSH Session Handling
published 2025-06-16 16 mo ago modified 2026-06-17 4 mo ago also GHSA-g8qw-mgjx-rwjr , GO-2025-3762 , EUVD-2025-18385
- cvss
- 8.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 23%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- go github.com/ubuntu/authd 0.5.4
- canonical authd 0.5.4
- govulncheck-vulndb openSUSE Tumbleweed 0.0.20250730T213748-1.1
opensuse advisories openSUSE-SU-2025:15405-1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 16 mo ago
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N |
| GitHub | 3.1 | 6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/ubuntu/authd | <0.5.4 |
0.5.4 |
Affected products
- Canonical authd
Classification
References
-
github.com
/ubuntu/authd/security/advisories/GHSA-g8qw-mgjx-rwjr
web, patch, vendor-advisory, advisory
-
github.com
/ubuntu/authd/commit/619ce8e55953b970f1765ddaad565081538151ab
web, patch
-
nvd.nist.gov
/vuln/detail/CVE-2025-5689
advisory
-
github.com
/ubuntu/authd
package
Sources
- CVE List CVE-2025-5689
- GitHub Advisory GHSA-g8qw-mgjx-rwjr
- NVD CVE-2025-5689
- OSV GO-2025-3762
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.