What is CVE-2022-20790?

CVE-2022-20790 is a medium-severity vulnerability in Cisco Unified Communications Manager, classified under Relative Path Traversal. CVSS score: 6.5/10. Published 2022-04-21.

How severe is CVE-2022-20790?

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

Path Traversal in Cisco Unified Communications Manager

CVE-2022-20790

A vulnerability in the web-based management interface of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an authenticated, remote attacker to read arbitrary files from the underlying operating system. This vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request that contains directory traversal character sequences to an affected system. A successful exploit could allow the attacker to access sensitive files on the underlying operating system.

Published 2022-04-21 · 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:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.019 (78.9th percentile), scored 2026-10-20.

Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 78.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000

Affected products

Weakness classification (CWE)

References

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

Frequently asked questions

What is CVE-2022-20790?: CVE-2022-20790 is a medium-severity vulnerability in Cisco Unified Communications Manager, classified under Relative Path Traversal. CVSS score: 6.5/10. Published 2022-04-21.
How severe is CVE-2022-20790?: Medium severity. CVSS v3 base score is 6.5 out of 10.