January 21, 2026 · Applied Cybernetics Group
CVE-2026-20045 — Cisco Unified Communications Manager
Cisco Unified Communications Products Code Injection Vulnerability
- Added to KEV
2026-01-21- Federal due date
2026-02-11- Vendor
- Cisco
- Product
- Unified Communications Manager
- EPSS
- 86.9th percentile (score 0.030, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2026-20045
CISA short 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
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.