CVE-2026-20037 - Vulnerability Details

Description

A vulnerability in the NX-OS CLI privilege levels of Cisco UCS Manager Software could allow an authenticated, local attacker with read-only privileges to modify files and perform unauthorized actions on an affected system.
 
This vulnerability exists because unnecessary privileges are given to the user. An attacker could exploit this vulnerability by authenticating to a device as a read-only user and connecting to the NX-OS CLI. A successful exploit could allow the attacker to create or overwrite files in the file system or perform limited privileged actions on an affected device.   

Published: 2026-02-25

Score: 4.4 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

No analysis available yet.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Cisco

Cisco Unified Computing System (Managed)

unknown

Version	Status	Constraints
`4.0(4c)`	affected	—
`4.0(2b)`	affected	—
`4.1(2a)`	affected	—
`4.0(1a)`	affected	—
`4.0(2a)`	affected	—
`4.0(1b)`	affected	—
`4.1(1c)`	affected	—
`4.0(4a)`	affected	—
`4.0(4b)`	affected	—
`4.0(2e)`	affected	—
`4.1(1a)`	affected	—
`4.0(4d)`	affected	—
`4.0(4h)`	affected	—
`4.0(4g)`	affected	—
`4.0(1d)`	affected	—
`4.1(1e)`	affected	—
`4.0(4f)`	affected	—
`4.0(4e)`	affected	—
`4.0(4i)`	affected	—
`4.1(1d)`	affected	—
`4.0(2d)`	affected	—
`4.1(1b)`	affected	—
`4.0(1c)`	affected	—
`4.1(2b)`	affected	—
`4.0(4k)`	affected	—
`4.1(3a)`	affected	—
`4.1(3b)`	affected	—
`4.1(2c)`	affected	—
`4.0(4l)`	affected	—
`4.1(4a)`	affected	—
`4.1(3c)`	affected	—
`4.1(3d)`	affected	—
`4.2(1c)`	affected	—
`4.2(1d)`	affected	—
`4.0(4m)`	affected	—
`4.1(3e)`	affected	—
`4.2(1f)`	affected	—
`4.1(3f)`	affected	—
`4.2(1i)`	affected	—
`4.1(3h)`	affected	—
`4.2(1k)`	affected	—
`4.2(1l)`	affected	—
`4.0(4n)`	affected	—
`4.2(1m)`	affected	—
`4.1(3i)`	affected	—
`4.2(2a)`	affected	—
`4.2(1n)`	affected	—
`4.1(3j)`	affected	—
`4.2(2c)`	affected	—
`4.2(2d)`	affected	—
`4.2(3b)`	affected	—
`4.1(3k)`	affected	—
`4.0(4o)`	affected	—
`4.2(2e)`	affected	—
`4.2(3d)`	affected	—
`4.2(3e)`	affected	—
`4.2(3g)`	affected	—
`4.1(3l)`	affected	—
`4.3(2b)`	affected	—
`4.2(3h)`	affected	—
`4.2(3i)`	affected	—
`4.3(2c)`	affected	—
`4.1(3m)`	affected	—
`4.3(2e)`	affected	—
`4.3(3a)`	affected	—
`4.2(3j)`	affected	—
`4.3(3c)`	affected	—
`4.3(4a)`	affected	—
`4.2(3k)`	affected	—
`4.3(4b)`	affected	—
`4.3(4c)`	affected	—
`4.2(3l)`	affected	—
`4.3(4d)`	affected	—
`4.3(2f)`	affected	—
`4.2(3m)`	affected	—
`4.3(5a)`	affected	—
`4.3(4e)`	affected	—
`4.1(3n)`	affected	—
`4.3(4f)`	affected	—
`4.2(3n)`	affected	—
`4.3(5c)`	affected	—
`4.2(3o)`	affected	—
`4.3(5d)`	affected	—
`4.3(6a)`	affected	—
`4.3(6b)`	affected	—
`4.3(5e)`	affected	—
`4.3(6c)`	affected	—
`4.2(3p)`	affected	—
`4.3(6d)`	affected	—
`4.3(6e)`	affected	—

No data.

Vendor Product Confidence Versions

Cisco

Unified Computing System Manager

89%

Version	Status	Scheme	Platform
`4.0(4c)`	affected	generic	—
`4.0(2b)`	affected	generic	—
`4.1(2a)`	affected	generic	—
`4.0(1a)`	affected	generic	—
`4.0(2a)`	affected	generic	—
`4.0(1b)`	affected	generic	—
`4.1(1c)`	affected	generic	—
`4.0(4a)`	affected	generic	—
`4.0(4b)`	affected	generic	—
`4.0(2e)`	affected	generic	—
`4.1(1a)`	affected	generic	—
`4.0(4d)`	affected	generic	—
`4.0(4h)`	affected	generic	—
`4.0(4g)`	affected	generic	—
`4.0(1d)`	affected	generic	—
`4.1(1e)`	affected	generic	—
`4.0(4f)`	affected	generic	—
`4.0(4e)`	affected	generic	—
`4.0(4i)`	affected	generic	—
`4.1(1d)`	affected	generic	—
`4.0(2d)`	affected	generic	—
`4.1(1b)`	affected	generic	—
`4.0(1c)`	affected	generic	—
`4.1(2b)`	affected	generic	—
`4.0(4k)`	affected	generic	—
`4.1(3a)`	affected	generic	—
`4.1(3b)`	affected	generic	—
`4.1(2c)`	affected	generic	—
`4.0(4l)`	affected	generic	—
`4.1(4a)`	affected	generic	—
`4.1(3c)`	affected	generic	—
`4.1(3d)`	affected	generic	—
`4.1(2c)`	affected	generic	—
`4.0(4l)`	affected	generic	—
`4.1(4a)`	affected	generic	—
`4.2(1c)`	affected	generic	—
`4.2(1d)`	affected	generic	—
`4.0(4m)`	affected	generic	—
`4.1(3e)`	affected	generic	—
`4.2(1f)`	affected	generic	—
`4.1(3f)`	affected	generic	—
`4.2(1i)`	affected	generic	—
`4.1(3h)`	affected	generic	—
`4.2(1k)`	affected	generic	—
`4.2(1l)`	affected	generic	—
`4.0(4n)`	affected	generic	—
`4.2(1m)`	affected	generic	—
`4.1(3i)`	affected	generic	—
`4.2(2a)`	affected	generic	—
`4.2(1n)`	affected	generic	—
`4.1(3j)`	affected	generic	—
`4.2(2c)`	affected	generic	—
`4.2(2d)`	affected	generic	—
`4.2(3b)`	affected	generic	—
`4.1(3k)`	affected	generic	—
`4.0(4o)`	affected	generic	—
`4.2(2e)`	affected	generic	—
`4.2(3d)`	affected	generic	—
`4.2(3e)`	affected	generic	—
`4.2(3g)`	affected	generic	—
`4.1(3l)`	affected	generic	—
`4.3(2b)`	affected	generic	—
`4.2(3h)`	affected	generic	—
`4.2(3i)`	affected	generic	—
`4.3(2c)`	affected	generic	—
`4.1(3m)`	affected	generic	—
`4.3(2e)`	affected	generic	—
`4.3(3a)`	affected	generic	—
`4.2(3j)`	affected	generic	—
`4.3(3c)`	affected	generic	—
`4.3(4a)`	affected	generic	—
`4.2(3k)`	affected	generic	—
`4.3(4b)`	affected	generic	—
`4.3(4c)`	affected	generic	—
`4.2(3l)`	affected	generic	—
`4.3(4d)`	affected	generic	—
`4.3(2f)`	affected	generic	—
`4.2(3m)`	affected	generic	—
`4.3(5a)`	affected	generic	—
`4.3(4e)`	affected	generic	—
`4.1(3n)`	affected	generic	—
`4.3(4f)`	affected	generic	—
`4.2(3n)`	affected	generic	—
`4.3(5c)`	affected	generic	—
`4.2(3o)`	affected	generic	—
`4.3(5d)`	affected	generic	—
`4.3(6a)`	affected	generic	—
`4.3(6b)`	affected	generic	—
`4.3(5e)`	affected	generic	—
`4.3(6c)`	affected	generic	—
`4.2(3p)`	affected	generic	—
`4.3(6d)`	affected	generic	—
`4.3(6e)`	affected	generic	—

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Remediation

No remediation available yet.

Tracking

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Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00016.

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucsm-afwae-mOgUfyLn

History

Thu, 26 Feb 2026 22:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Thu, 26 Feb 2026 13:30:00 +0000

Type	Values Removed	Values Added
First Time appeared		Cisco Cisco unified Computing System Manager
Vendors & Products		Cisco Cisco unified Computing System Manager

Wed, 25 Feb 2026 17:15:00 +0000

Type	Values Removed	Values Added
Description		A vulnerability in the NX-OS CLI privilege levels of Cisco UCS Manager Software could allow an authenticated, local attacker with read-only privileges to modify files and perform unauthorized actions on an affected system.   This vulnerability exists because unnecessary privileges are given to the user. An attacker could exploit this vulnerability by authenticating to a device as a read-only user and connecting to the NX-OS CLI. A successful exploit could allow the attacker to create or overwrite files in the file system or perform limited privileged actions on an affected device.
Title		Cisco UCS Manager File Write Vulnerability
Weaknesses		CWE-250
References		https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucsm-afwae-mOgUfyLn
Metrics		cvssV3_1 `{'score': 4.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'}`

Subscriptions

Cisco Unified Computing System Manager

MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2026-02-25T16:24:09.650Z

Updated: 2026-02-25T19:05:48.855Z

Reserved: 2025-10-08T11:59:15.353Z

Link: CVE-2026-20037

Vulnrichment

Updated: 2026-02-25T18:17:48.760Z

NVD

Status : Awaiting Analysis

Published: 2026-02-25T17:25:25.190

Modified: 2026-02-27T14:06:59.787

Link: CVE-2026-20037

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-02-26T13:15:27Z

Weaknesses

CWE-250

Tracking

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction None

Exploitation none

Automatable no

Technical Impact partial

Subscriptions

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