What is CVE-2022-20859?

CVE-2022-20859 is a medium-severity vulnerability in Cisco Unified Communications Manager, classified under Improper Access Control. CVSS score: 6.5/10. Published 2022-07-06.

How severe is CVE-2022-20859?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Cisco Unified Communications Manager

CVE-2022-20859

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.

Published 2022-07-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.013 (69.3th percentile), scored 2026-10-20.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.013 · change: +0.000

Affected products

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucm-acce… (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2022-20859?: CVE-2022-20859 is a medium-severity vulnerability in Cisco Unified Communications Manager, classified under Improper Access Control. CVSS score: 6.5/10. Published 2022-07-06.
How severe is CVE-2022-20859?: Medium severity. CVSS v3 base score is 6.5 out of 10.