Cisco Unified Communications Products Code Injection Vulnerability

Technical Severity

CVSS v3.1 Metrics

HIGH

8.2 / 10

Minimal Risk Critical

Vector Specification

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Exploitation Likelihood

EPSS Prediction

1.34 %

Predictive Probability

Percentile Rank

79.9 th

Documented as more likely to be exploited than 79.9% of known CVEs.

Detection Date

Jan 21, 2026

Remediation Due

Feb 11, 2026

CISA Catalog Active

Threat Analysis

Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P), Cisco Unity Connection, and Cisco Webex Calling Dedicated Instance contain a code injection vulnerability that could allow the attacker to obtain user-level access to the underlying operating system and then elevate privileges to root.

Remediation Directive

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

External Intelligence

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-voice-rce-mORhqY4b

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2026-20045