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CVE-2026-20288: Improper Neutralization of Expression/Command Delimiters in Cisco Cisco Unified Computing System (Standalone)

0
Medium
VulnerabilityCVE-2026-20288cvecve-2026-20288
Published: 08/05/2026 (08/05/2026, 16:27:53 UTC)
Source: CVE Database V5
Vendor/Project: Cisco
Product: Cisco Unified Computing System (Standalone)

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.

CVSS v3.1

Score 6.5medium

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/05/2026, 17:33:30 UTC

Technical Analysis

This vulnerability involves improper neutralization of expression or command delimiters in the Cisco IMC web-based management interface. An attacker with Admin privileges can exploit this flaw by submitting crafted inputs, leading to arbitrary command execution on the underlying OS with root privileges. The vulnerability stems from insufficient input validation, allowing command injection. Cisco has assigned a high security impact rating due to the potential for privilege escalation to root, despite the CVSS score being medium.

Potential Impact

Successful exploitation allows an authenticated attacker with Admin privileges to execute arbitrary commands on the underlying operating system as the root user, potentially leading to full system compromise. This elevates the attacker's privileges beyond the initial Admin level to root, increasing the severity of the impact.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been provided at this time. Until a patch is available, restrict Admin access to trusted personnel and monitor for unusual activity on the management interface.

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Technical Details

Data Version
5.2
Assigner Short Name
cisco
Date Reserved
2025-10-08T11:59:15.405Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
null

Threat ID: 6a736b60bf8831d5392da49d

Added to database: 08/05/2026, 16:57:04 UTC

Last enriched: 08/05/2026, 17:33:30 UTC

Last updated: 08/05/2026, 22:00:26 UTC

Views: 4

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