CVE-2026-20045
Cisco Unified Communications Products Code Injection Vulnerability
Exploited in the wild
This vulnerability is on the CISA Known Exploited Vulnerabilities list, added 2026-01-21. Federal due date: 2026-02-11.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Cisco | Unified Communications Manager | from 12.5 before 14su5 from 15.0 through 15su3a |
| Cisco | Unified Communications Manager Im And Presence Service | from 12.5 before 14su5 from 15.0 through 15su3a |
| Cisco | Unity Connection | from 12.5 before 14su5 from 15.0 through 15su3 |