CVE-2026-20045 — Cisco Unified Communications Products Code Injection Vulnerability
CVE-2026-20045: Cisco Unified Communications Products Code Injection Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | Cisco |
| Product | Unified Communications Manager |
| Date added | 2026-01-21 |
| Due date | 2026-02-11 |
| Ransomware campaign use | Unknown |
Description
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.
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-voice-rce-mORhqY4b ; https://nvd.nist.gov/vuln/detail/CVE-2026-20045
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-20045
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog