CVE-2026-20288 - Vulnerability Details

- Cisco IMC Remote Code Execution Vulnerability Remote Code Execution Vulnerability

Description

A vulnerability in the web-based management interface of Cisco IMC could allow an authenticated, remote attacker with Admin privileges to execute arbitrary commands on the underlying operating system of an affected system and elevate privileges to root. 

This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by entering crafted inputs to the web-based management interface of the affected software. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system as the root user. 
Cisco has assigned this vulnerability a SIR of High rather than Medium as the score indicates because additional security implications could occur when the attacker becomes root.

Published: 2026-08-05

Score: 6.5 Medium

EPSS: n/a

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 (Standalone)

unknown

Version	Status	Constraints
`4.0(2g)`	affected	—
`3.1(2i)`	affected	—
`3.1(1d)`	affected	—
`4.0(4i)`	affected	—
`4.1(1c)`	affected	—
`4.0(2c)`	affected	—
`4.0(1e)`	affected	—
`4.0(2h)`	affected	—
`4.0(4h)`	affected	—
`4.0(1h)`	affected	—
`4.0(2l)`	affected	—
`3.1(3g)`	affected	—
`4.0(1.240)`	affected	—
`4.0(2f)`	affected	—
`4.0(1g)`	affected	—
`4.0(2i)`	affected	—
`3.1(3i)`	affected	—
`4.0(4d)`	affected	—
`4.1(1d)`	affected	—
`3.1(3c)`	affected	—
`4.0(4k)`	affected	—
`3.1(2d)`	affected	—
`3.1(3a)`	affected	—
`3.1(3j)`	affected	—
`4.0(2d)`	affected	—
`4.1(1f)`	affected	—
`4.0(4j)`	affected	—
`4.0(2m)`	affected	—
`4.0(2k)`	affected	—
`4.0(1c)`	affected	—
`4.0(4f)`	affected	—
`4.0(4c)`	affected	—
`3.1(3d)`	affected	—
`3.1(2g)`	affected	—
`3.1(2c)`	affected	—
`4.0(1d)`	affected	—
`3.1(2e)`	affected	—
`4.0(1a)`	affected	—
`4.0(1b)`	affected	—
`3.1(3b)`	affected	—
`4.0(4b)`	affected	—
`3.1(2b)`	affected	—
`4.0(4e)`	affected	—
`3.1(3h)`	affected	—
`4.0(4l)`	affected	—
`4.1(1g)`	affected	—
`4.1(2a)`	affected	—
`4.0(2n)`	affected	—
`4.1(1h)`	affected	—
`3.1(3k)`	affected	—
`4.1(2b)`	affected	—
`4.0(2o)`	affected	—
`4.0(4m)`	affected	—
`4.1(2d)`	affected	—
`4.1(3b)`	affected	—
`4.0(2p)`	affected	—
`4.1(2e)`	affected	—
`4.1(2f)`	affected	—
`4.0(4n)`	affected	—
`4.0(2q)`	affected	—
`4.1(3c)`	affected	—
`4.0(2r)`	affected	—
`4.1(3d)`	affected	—
`4.1(2g)`	affected	—
`4.1(2h)`	affected	—
`4.1(3g)`	affected	—
`4.1(3f)`	affected	—
`4.1(2j)`	affected	—
`4.1(2k)`	affected	—
`4.1(3h)`	affected	—
`4.2(2a)`	affected	—
`4.1(3i)`	affected	—
`4.2(2f)`	affected	—
`4.2(2g)`	affected	—
`4.2(3b)`	affected	—
`4.1(3l)`	affected	—
`4.2(3d)`	affected	—
`4.3(1.230097)`	affected	—
`4.2(1e)`	affected	—
`4.2(1b)`	affected	—
`4.2(1j)`	affected	—
`4.2(1i)`	affected	—
`4.2(1f)`	affected	—
`4.2(1a)`	affected	—
`4.2(1c)`	affected	—
`4.2(1g)`	affected	—
`4.3(1.230124)`	affected	—
`4.1(2l)`	affected	—
`4.2(3e)`	affected	—
`4.3(1.230138)`	affected	—
`4.2(3g)`	affected	—
`4.3(2.230207)`	affected	—
`4.2(3h)`	affected	—
`4.2(3i)`	affected	—
`4.3(2.230270)`	affected	—
`4.1(3m)`	affected	—
`4.1(2m)`	affected	—
`4.3(2.240002)`	affected	—
`4.3(3.240022)`	affected	—
`4.2(3j)`	affected	—
`4.1(3n)`	affected	—
`4.3(2.240009)`	affected	—
`4.3(3.240041)`	affected	—
`4.2(3k)`	affected	—
`4.3(3.240043)`	affected	—
`4.3(4.240142)`	affected	—
`4.3(2.240037)`	affected	—
`4.3(2.240053)`	affected	—
`4.3(4.240152)`	affected	—
`4.2(3l)`	affected	—
`4.3(2.240077)`	affected	—
`4.3(4.242028)`	affected	—
`4.3(4.241063)`	affected	—
`4.3(4.242038)`	affected	—
`4.2(3m)`	affected	—
`4.3(2.240090)`	affected	—
`4.3(5.240021)`	affected	—
`4.3(2.240107)`	affected	—
`4.3(4.242066)`	affected	—
`4.2(3n)`	affected	—
`4.3(5.250001)`	affected	—
`4.2(3o)`	affected	—
`4.3(2.250016)`	affected	—
`4.3(2.250021)`	affected	—
`4.3(5.250030)`	affected	—
`4.3(2.250022)`	affected	—
`4.3(6.250039)`	affected	—
`4.3(6.250040)`	affected	—
`4.3(5.250033)`	affected	—
`4.3(6.250044)`	affected	—
`4.3(6.250053)`	affected	—
`4.3(2.250037)`	affected	—
`4.3(2.250045)`	affected	—
`4.3(4.252001)`	affected	—
`4.3(4.252002)`	affected	—
`6.0(1.250127)`	affected	—
`4.2(3p)`	affected	—
`6.0(1.250131)`	affected	—
`4.3(6.250101)`	affected	—
`6.0(1.250174)`	affected	—
`4.3(6.250117)`	affected	—
`4.3(5.250043)`	affected	—
`4.3(5.250045)`	affected	—
`4.3(6.250060)`	affected	—
`6.0(1.250130)`	affected	—
`4.3(4.241014)`	affected	—
`4.3(2.250063)`	affected	—
`6.0(1.250192)`	affected	—
`4.3(6.260003)`	affected	—
`6.0(1.250194)`	affected	—
`4.3(6.260017)`	affected	—
`4.3(2.260007)`	affected	—
`6.0(2.260044)`	affected	—
`6.0(2.260069)`	affected	—
`4.3(6.260033)`	affected	—
`4.2(3q)`	affected	—

Cisco

Cisco Unified Computing System E-Series Software (UCSE)

unknown

Version	Status	Constraints
`3.2.7`	affected	—
`3.2.6`	affected	—
`3.2.4`	affected	—
`3.2.10`	affected	—
`3.2.2`	affected	—
`3.2.3`	affected	—
`3.2.1`	affected	—
`3.2.11.1`	affected	—
`3.2.8`	affected	—
`3.1.1`	affected	—
`3.1.2`	affected	—
`3.1.4`	affected	—
`3.1.3`	affected	—
`3.1.5`	affected	—
`3.1.0`	affected	—
`3.2.11.3`	affected	—
`3.2.11.5`	affected	—
`3.2.12.2`	affected	—
`3.2.13.6`	affected	—
`3.2.14`	affected	—
`4.11.1`	affected	—
`3.2.15`	affected	—
`4.12.1`	affected	—
`3.2.15.3`	affected	—
`4.12.2`	affected	—
`3.2.16.1`	affected	—
`4.15.2`	affected	—
`3.2.17.1`	affected	—
`4.15.3`	affected	—

No data.

No data available yet.

Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

References

Link	Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cimc-arg-inject-upSHdMfU

History

Wed, 05 Aug 2026 18:30:00 +0000

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

Wed, 05 Aug 2026 17:00:00 +0000

Type	Values Removed	Values Added
Description		A vulnerability in the web-based management interface of Cisco IMC could allow an authenticated, remote attacker with Admin privileges to execute arbitrary commands on the underlying operating system of an affected system and elevate privileges to root.  This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by entering crafted inputs to the web-based management interface of the affected software. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system as the root user.  Cisco has assigned this vulnerability a SIR of High rather than Medium as the score indicates because additional security implications could occur when the attacker becomes root.
Title		Cisco IMC Remote Code Execution Vulnerability Remote Code Execution Vulnerability
Weaknesses		CWE-146
References		https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cimc-arg-inject-upSHdMfU
Metrics		cvssV3_1 `{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N'}`

Subscriptions

No data.

MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2026-08-05T16:27:53.491Z

Updated: 2026-08-05T17:45:13.560Z

Reserved: 2025-10-08T11:59:15.405Z

Link: CVE-2026-20288

Vulnrichment

Updated: 2026-08-05T17:39:03.361Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-146
Improper Neutralization of Expression/Command Delimiters

Tracking

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

Exploitation none

Automatable no

Technical Impact total

Subscriptions

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