Vulnerability in Cisco Unified Communications Manager
CVE-2022-20789
A vulnerability in the software upgrade process 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 write arbitrary files on the affected system. This vulnerability is due to improper restrictions applied to a system script. An attacker could exploit this vulnerability by using crafted variables during the execution of a system upgrade. A successful exploit could allow the attacker to overwrite or append arbitrary data to system files using root-level privileges.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.014 (71.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 71.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: +0.001
Affected products
- Cisco Unified Communications Manager
- Cisco Unified Communications Manager — versions 12.5(1), 14.0, 12.5\(1\)
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-arb… (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-20789?
- CVE-2022-20789 is a medium-severity vulnerability in Cisco Unified Communications Manager, classified under External Control of File Name or Path. CVSS score: 4.9/10. Published 2022-04-21.
- How severe is CVE-2022-20789?
- Medium severity. CVSS v3 base score is 4.9 out of 10.