OpenSSH up to 9.5 ssh-agent privilege escalation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in OpenSSH up to 9.5. Impacted is an unknown function of the component ssh-agent. Performing a manipulation results in an unknown weakness. This vulnerability is cataloged as CVE-2023-51384. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in OpenSSH up to 9.5 (Connectivity Software). This affects an unknown functionality of the component ssh-agent. The impact remains unknown. The summary by CVE is:

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.

The weakness was shared 12/18/2023. It is possible to read the advisory at openssh.com. This vulnerability is uniquely identified as CVE-2023-51384 since 12/18/2023. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 242758 (NewStart CGSL MAIN 7.02 : openssh Multiple Vulnerabilities (NS-SA-2025-0124)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 9.6 eliminates this vulnerability. The upgrade is hosted for download at openssh.com.

The vulnerability is also documented in the vulnerability database at Tenable (242758). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

ADP CISA Base Score: 5.5
ADP CISA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 242758
Nessus Name: NewStart CGSL MAIN 7.02 : openssh Multiple Vulnerabilities (NS-SA-2025-0124)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: OpenSSH 9.6
Patch: github.com

Timelineinfo

12/18/2023 🔍
12/18/2023 +0 days 🔍
12/18/2023 +0 days 🔍
05/29/2026 +893 days 🔍

Sourcesinfo

Advisory: 881d9c6af9da4257c69c327c4e2f1508b2fa754b
Status: Confirmed

CVE: CVE-2023-51384 (🔍)
GCVE (CVE): GCVE-0-2023-51384
GCVE (VulDB): GCVE-100-248319

Entryinfo

Created: 12/18/2023 22:27
Updated: 05/29/2026 13:56
Changes: 12/18/2023 22:27 (39), 01/12/2024 10:28 (2), 01/12/2024 10:35 (10), 07/26/2025 15:28 (16), 05/29/2026 13:56 (10)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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