CVE-2026-20045

KEV
Published: Gen 21, 2026 Last Modified: Gen 22, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 8,2
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: low
Availability: none

Description

AI Translation Available

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.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0084
Percentile
0,7th
Updated

EPSS Score Trend (Last 5 Days)

94

Improper Control of Generation of Code ('Code Injection')

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control Integrity Confidentiality Availability Non-Repudiation
Potential Impacts:
Bypass Protection Mechanism Gain Privileges Or Assume Identity Execute Unauthorized Code Or Commands Hide Activities
Applicable Platforms
Languages: Interpreted
Technologies: AI/ML
Likelihood of Exploit: Medium
View CWE Details
Application

Unified Communications Manager Im And Presence Service by Cisco

Product Information
Vendor Cisco
Product Unified Communications Manager Im And Presence Service
Version Range Affected
From 12.5 (inclusive)
To 14su5 (exclusive)
cpe:2.3:a:cisco:unified_communications_manager_im_and_presence_service:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Unified Communications Manager by Cisco

Product Information
Vendor Cisco
Product Unified Communications Manager
Version Range Affected
From 12.5 (inclusive)
To 14su5 (exclusive)
cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:session_management:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Unity Connection by Cisco

Product Information
Vendor Cisco
Product Unity Connection
Version Range Affected
From 12.5 (inclusive)
To 14su5 (exclusive)
cpe:2.3:a:cisco:unity_connection:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Unified Communications Manager by Cisco

Product Information
Vendor Cisco
Product Unified Communications Manager
Version Range Affected
From 15.0 (inclusive)
To 15su3a (inclusive)
cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:session_management:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Unified Communications Manager by Cisco

Product Information
Vendor Cisco
Product Unified Communications Manager
Version Range Affected
From 12.5 (inclusive)
To 14su5 (exclusive)
cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:-:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Unified Communications Manager by Cisco

Product Information
Vendor Cisco
Product Unified Communications Manager
Version Range Affected
From 15.0 (inclusive)
To 15su3a (inclusive)
cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:-:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Unified Communications Manager Im And Presence Service by Cisco

Product Information
Vendor Cisco
Product Unified Communications Manager Im And Presence Service
Version Range Affected
From 15.0 (inclusive)
To 15su3a (inclusive)
cpe:2.3:a:cisco:unified_communications_manager_im_and_presence_service:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Unity Connection by Cisco

Product Information
Vendor Cisco
Product Unity Connection
Version Range Affected
From 15.0 (inclusive)
To 15su3 (inclusive)
cpe:2.3:a:cisco:unity_connection:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://www.cisa.gov/known-exploited-vulnerabilities-catalo…
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026…
https://sec.cloudapps.cisco.com/security/center/content/Cis…
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/c…