CVE intelligence

CVE-2026-76506

Vulnerability intelligence

Published Nov 4, 2026Sources checked Nov 4, 2026

7.6HIGHCVSS out of 10

What this means

Review the available evidence

CVE-2026-76506 and is rated High severity with a CVSS score of 7.6. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Cisco Security Advisories guidance

Vendor revision: Nov 4, 2026

To remediate the vulnerabilities that were disclosed on November 4, 2026, Cisco strongly recommends that customers upgrade to the fixed software that is indicated in the advisories.

Cisco Security Advisories guidance

Vendor revision: Nov 4, 2026

Cisco has released software updates that address this vulnerability There are no workarounds that address this vulnerability.

CISA KEVNot listedBased on the latest collected catalog

EPSSUnavailableNo current score collected

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-76506?

A vulnerability in the web-based management interface of Cisco UCS Central Software could allow an authenticated, remote attacker to achieve remote code execution or conduct information disclosure attacks on an affected device.

This vulnerability is due to insufficient validation of user-supplied input in an HTTP request. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected endpoint on an affected device.

A successful exploit could allow the attacker to execute arbitrary commands, write arbitrary files to the filesystem, and obtain sensitive information. To exploit this vulnerability, the attacker must have valid user credentials on the affected device.

Cisco has released software updates that address this vulnerability There are no workarounds that address this vulnerability.

Source: NVD

Official advisory

Configuration and update guidance

Cisco Security Advisories · Updated Nov 4, 2026

Affected products and configuration

This vulnerability affects Cisco UCS Central Software, regardless of device configuration.

For information about which Cisco software releases are vulnerable, see the Fixed Software section of this advisory.

Workarounds and temporary mitigations

There are no workarounds that address this vulnerability.

Fixed software

Cisco considers any workarounds and mitigations (if applicable) to be temporary solutions until an upgrade to a fixed software release is available. To remediate this vulnerability and avoid future exposure as described in this advisory, Cisco strongly recommends that customers upgrade to the fixed software indicated in this advisory.

Fixed Releases

In the following table, the left column lists Cisco software releases. The right column indicates whether a release is affected by the vulnerability that is described in this advisory and the first release that includes the fix for this vulnerability. Customers are advised to upgrade to an appropriate fixed software release as indicated in this section.

Cisco UCS Central Software	First Fixed Release
2.0 and earlier	Migrate to a fixed release.
2.1	2.1(2c)

The Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory.

Exploitation status

The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

Read the collected advisory