Cisco Unified Communications Manager (CUCM) < 15SU5 Improper Access Control (cisco-sa-cucm-access-PW9e8Jt2)

medium Nessus Plugin ID 371209

Synopsis

The remote device is missing a vendor-supplied security patch.

Description

According to its self-reported version, Cisco Unified Communications Manager is affected by an 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. (CVE-2026-76487)

Release 14 is affected and must migrate to a fixed release. Release 15 is fixed in 15SU5.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCwv00936.

See Also

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwv00936

http://www.nessus.org/u?063316c9

Plugin Details

Severity: Medium

ID: 371209

File Name: cisco-sa-cucm-access-PW9e8Jt2.nasl

Version: 1.1

Type: Combined

Family: CISCO

Published: 10/23/2026

Updated: 10/23/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

CVSS v2

Risk Factor: Medium

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS Score Source: CVE-2026-76487

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Vulnerability Information

CPE: cpe:/a:cisco:unified_communications_manager

Required KB Items: Host/Cisco/CUCM/Version

Patch Publication Date: 10/21/2026

Vulnerability Publication Date: 10/21/2026

Reference Information

CVE: CVE-2026-76487

CWE: 749

CISCO-SA: cisco-sa-cucm-access-PW9e8Jt2

IAVA: 2026-A-1188

CISCO-BUG-ID: CSCwv00936