Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since January 21, 2026.
CVE-2026-20045
Cisco Unified Communications Products Code Injection Vulnerability
Cisco · Unified Communications Manager
Added to KEV January 21, 2026
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2026-20045
- CWE
- CWE-94
- Affected products
- Unified Communications Manager · Cisco Unified Communications Manager · Cisco
What happened
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.
What it means for your business
Cisco Unified Communications Manager is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2026-20045). 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. CISA remediation due date: 2026-02-11. If you need help checking exposure, call (864) 335-9223.
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.
CISA due date: February 11, 2026
Sources
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