CVE-2026-20045—Cisco Unified Communications Products Code Injection Vulnerability

Vulnerability Name

Cisco Unified Communications Products Code Injection Vulnerability

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.

Known To Be Used in Ransomware Campaigns?

Ransomware Status:

Unknown

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.

Additional Notes

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-voice-rce-mORhqY4b
• https://nvd.nist.gov/vuln/detail/CVE-2026-20045

Related News Articles

• Cisco finally confirms attackers exploiting Unified CM flawJuly 2, 2026
• Cisco Unified CM flaw actively exploited to drop webshells (CVE-2026-20230)June 24, 2026
• Cisco Patches CVE-2026-20230 in Unified CM as Exploit Code Goes PublicJune 4, 2026
• Cisco warns of critical Unified CM flaw with PoC exploit codeJune 4, 2026
• Cisco Fixes Actively Exploited Zero-Day CVE-2026-20045 in Unified CM and WebexJanuary 22, 2026

Related Weaknesses

• CWE-94