CVE-2023-51384

Advisory lineage Upstream: 0 Downstream: 5
Modified
Published: 18 Dec 2023, 00:00
Last modified:14 Jul 2026, 12:24

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.43% LOW
0% probability +0.38%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

18 Dec 2023, 00:00
Published
Vulnerability first disclosed
14 Jul 2026, 12:24
Last Modified
Vulnerability information updated

Description

In ssh-agent in OpenSSH before 9.6, certain destination constraints can be incompletely applied. When destination constraints are specified during addition of PKCS#11-hosted private keys, these constraints are only applied to the first key, even if a PKCS#11 token returns multiple keys.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS Trends

Current EPSS score: 0.43%• Percentile: 34%

Techniques & Countermeasures

  • CWE-284•Improper Access Control

    The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Affected Systems

  • debian•debian_linux

    11.0 | 12.0

  • openbsd•openssh

    ≥ 8.9, < 9.6

References (11)