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VulnerabilityKnown exploited
Cisco Unified Communications Products Code Injection Vulnerability
CVE-2026-20045 · CISA KEV · January 21, 2026
Summary
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.
From CISA, quoted as published. Check the source before acting.
What to do
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 required action, quoted.
Affected products
| Vendor | Product |
|---|---|
| Cisco | Unified Communications Manager |
Why it's on these mode pages
- Maritime: Vendor table: Cisco (network and remote-access gear used in every mode, all modes) (matched by rule)
- Pipeline: Vendor table: Cisco (network and remote-access gear used in every mode, all modes) (matched by rule)
- Freight rail: Vendor table: Cisco (network and remote-access gear used in every mode, all modes) (matched by rule)
- Passenger rail and transit: Vendor table: Cisco (network and remote-access gear used in every mode, all modes) (matched by rule)
- Highway and motor carrier: Vendor table: Cisco (network and remote-access gear used in every mode, all modes) (matched by rule)
- Postal and parcel: Vendor table: Cisco (network and remote-access gear used in every mode, all modes) (matched by rule)
Change history
- November 9, 2026: First collected by Watch
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