CVE-2021-40119 - CVE House
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Status published Critical CVE-2021-40119

Cisco Policy Suite Static SSH Keys Vulnerability

Vulnerability Description

A vulnerability in the key-based SSH authentication mechanism of Cisco Policy Suite could allow an unauthenticated, remote attacker to log in to an affected system as the root user. This vulnerability is due to the re-use of static SSH keys across installations. An attacker could exploit this vulnerability by extracting a key from a system under their control. A successful exploit could allow the attacker to log in to an affected system as the root user.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Cisco Policy Suite (CPS) Software
Vulnerable Versions:
Unknown

Timeline

Official Publish: November 4th, 2021
Last Modified: November 7th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-321

MITRE ATT&CK TTPs

T1552 Unsecured Credentials
Credential Access
T1040 Network Sniffing
Credential Access
T1537 Transfer Data to Cloud Account
Credential Access
T1078 Valid Accounts
Persistence
T1041 Exfiltration Over C2 Channel
Exfiltration