CVE-2021-1362: Cisco Unified Communications Products Remote Code Execution Vulnerability

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-04-08 · updated 2026-06-17
Weakness: CWE-94

Description

A vulnerability in the SOAP API endpoint of Cisco Unified Communications Manager, Cisco Unified Communications Manager Session Management Edition, Cisco Unified Communications Manager IM & Presence Service, Cisco Unity Connection, and Cisco Prime License Manager could allow an authenticated, remote attacker to execute arbitrary code on an affected device. This vulnerability is due to improper sanitization of user-supplied input. An attacker could exploit this vulnerability by sending a SOAP API request with crafted parameters to an affected device. A successful exploit could allow the attacker to execute arbitrary code with root privileges on the underlying Linux operating system of the affected device.

Affected products

Cisco Prime License Manager: from 10.5\(2\) before 11.5\(1\)su9 — fixed in 11.5\(1\)su9
Cisco Unified Communications Manager: from 10.5\(2\) before 11.5\(1\)su9; from 12.0\(1\) before 12.5\(1\)su4 — fixed in 11.5\(1\)su9, 12.5\(1\)su4
Cisco Unified Communications Manager Im & Presence Service: from 10.5\(2\) before 11.5\(1\)su9; from 12.0\(1\) before 12.5\(1\)su4 — fixed in 11.5\(1\)su9, 12.5\(1\)su4
Cisco Unity Connection: from 10.5\(2\) before 11.5\(1\)su9; from 12.0\(1\) before 12.5\(1\)su4 — fixed in 11.5\(1\)su9, 12.5\(1\)su4

How to fix

Upgrade to a fixed version: Cisco Prime License Manager 11.5\(1\)su9; Cisco Unified Communications Manager 11.5\(1\)su9, 12.5\(1\)su4; Cisco Unified Communications Manager Im & Presence Service 11.5\(1\)su9, 12.5\(1\)su4; Cisco Unity Connection 11.5\(1\)su9, 12.5\(1\)su4. Check the vendor advisory for mitigations.

References

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