CVE-2022-20859: Cisco Unified Communications Products Access Control Vulnerability

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-07-06 · updated 2026-06-17
Weakness: CWE-284

Description

A vulnerability in the Disaster Recovery framework of Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P), and Cisco Unity Connection could allow an authenticated, remote attacker to perform certain administrative actions they should not be able to. This vulnerability is due to insufficient access control checks on the affected device. An attacker with read-only privileges could exploit this vulnerability by executing a specific vulnerable command on an affected device. A successful exploit could allow the attacker to perform a set of administrative actions they should not be able to.

Affected products

Cisco Unified Communications Manager: from 14.0 before 14su2 — fixed in 14su2
Cisco Unified Communications Manager IM and Presence Service: from 14.0 before 14.0su2 — fixed in 14.0su2
Cisco Unity Connection: from 14.0 before 14su2 — fixed in 14su2

How to fix

Upgrade to a fixed version: Cisco Unified Communications Manager 14su2; Cisco Unified Communications Manager IM and Presence Service 14.0su2; Cisco Unity Connection 14su2. Check the vendor advisory for mitigations.

References

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