CVE-2026-76487: Cisco Unified Communications Manager Improper Access Control Vulnerability
A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to conduct access control bypass attacks on an affected device. This vulnerability is due to improper input validation for specific HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to access parts of the network that are beyond the scope of their intended access.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this vulnerability?
An unauthenticated remote attacker can attempt exploitation. No prior privileges or user interaction are required.
What does an attacker need to do to exploit it?
The attacker must send a crafted HTTP request to an affected Cisco Unified CM or Unified CM SME device. The issue is caused by improper input validation for specific HTTP requests.
What is the likely impact of successful exploitation?
A successful attack can bypass access controls and allow access to parts of the network outside the attacker's intended access scope. The reported impact is limited to integrity; no confidentiality or availability impact is specified.