Live › vulnerability › CVE-2026-20045
Go to dashboardCisco Unified Communications Manager, Unity Connection and related Cisco voice products contain a code injection flaw. An attacker can get user-level shell access on the underlying operating system and then escalate to root.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 5h before NVD. All times on this page are UTC.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| cisco unified communications manager | vendor | >= 12.5, < 14su5 | 14su5 |
| cisco unified communications manager | vendor | >= 15.0, <= 15su3a | – |
| cisco unified communications manager im and presence service | vendor | >= 12.5, < 14su5 | 14su5 |
| cisco unified communications manager im and presence service | vendor | >= 15.0, <= 15su3a | – |
| cisco unity connection | vendor | >= 12.5, < 14su5 |
| 14su5 |
| cisco unity connection | vendor | >= 15.0, <= 15su3 | – |
| Cisco Unified Communications Manager | vendor | – | – |
Confirm which Cisco Unified CM, CM SME, IM&P, Unity Connection or Webex Calling Dedicated Instance versions you run, using the product admin interface.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
A vulnerability in 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 could allow an unauthenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device.
This vulnerability is due to improper validation of user-supplied input in HTTP requests. An attacker could exploit this vulnerability by sending a sequence of crafted HTTP requests to the web-based management interface of an affected device. A successful exploit could allow the attacker to obtain user-level access to the underlying operating system and then elevate privileges to root. Note: Cisco has assigned this security advisory a Security Impact Rating (SIR) of Critical rather than High as the score indicates. The reason is that exploitation of this vulnerability could result in an attacker elevating privileges to root.
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