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Vulnerabilities

Vulnerability · CVE-2025-20261

A vulnerability in the SSH connection handling of Cisco Integrated Management Controller (IMC) for Cisco UCS B-Series, UCS C-Series, UCS S-Series, and UCS X-Series Servers could al

Published Jun 4, 2025 · catalog updated Feb 26, 2026 · Cisco Cisco Unified Computing System (Managed)

Check this week

CVE-2025-20261 is not in CISA KEV. FIRST estimates a 46.00% chance of exploitation in the next 30 days. Check whether you run Cisco Cisco Unified Computing System (Managed).

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
46.00%
Remediation
Advisory link
Affected products
vendor Cisco Cisco Unified Computing System (Managed) 4.0(4h)

A vulnerability in the SSH connection handling of Cisco Integrated Management Controller (IMC) for Cisco UCS B-Series, UCS C-Series, UCS S-Series, and UCS X-Series Servers could allow an authenticated, remote attacker to access internal services with elevated privileges. This vulnerability is due to insufficient restrictions on access to internal services. An attacker with a valid user account could exploit this vulnerability by using crafted syntax when connecting to the Cisco IMC of an affected device through SSH. A successful exploit could allow the attacker to access internal services with

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Cisco Cisco Unified Computing System (Managed) 4.0(4h)4.0(4h)

How to fix CVE-2025-20261

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-20261 is not in CISA KEV. FIRST estimates a 46.00% chance of exploitation in the next 30 days. Check whether you run Cisco Cisco Unified Computing System (Managed).

Which versions are affected?

Compare what you have installed with Cisco Cisco Unified Computing System (Managed) 4.0(4h) 4.0(4h). Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 46.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Cisco security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 4, 2025 · EUVD

    Detected

    A vulnerability in the SSH connection handling of Cisco Integrated Management Controller (IMC) for Cisco UCS B-Series, UCS C-Series, UCS S-Series, and UCS X-Series Servers could allow an authenticated, remote attacker to access internal services with elevated privileges. This vulnerability is due to insufficient restrictions on access to internal services. An attacker with a valid user account cou

  2. Feb 26, 2026 · EUVD

    Updated

    A vulnerability in the SSH connection handling of Cisco Integrated Management Controller (IMC) for Cisco UCS B-Series, UCS C-Series, UCS S-Series, and UCS X-Series Servers could allow an authenticated, remote attacker to access internal services with elevated privileges. This vulnerability is due to insufficient restrictions on access to internal services. An attacker with a valid user account cou

Sources

  • CVE.orgVulnerability recordCVE-2025-20261

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2025-16890

    A vulnerability in the SSH connection handling of Cisco Integrated Management Controller (IMC) for Cisco UCS B-Series, UCS C-Series, UCS S-Series, and UCS X-Series Servers could allow an authenticated, remote attacker to access internal services with elevated privileges. This vul

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.