AEGLIX vulnerability intelligence
CVE-2026-20230
HIGH · CVSS 8.6 · Analyzed
Published: 2026-06-03 · Updated: 2026-10-07 · Source: NVD
Vulnerability overview
A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to conduct server-side request forgery (SSRF) attacks through an affected device. This vulnerability is due to improper input validation for specific HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to write files to the underlying operating system that could be used later to elevate 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. Note: To exploit this vulnerability, the WebDialer service must be enabled. WebDialer is disabled by default.
Severity and scoring
- CVSS score
- 8.6 · HIGH
- CVSS version
- 3.1
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
- Weaknesses
- CWE-918
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Listed in CISA’s Known Exploited Vulnerabilities catalog.
- Affected product
- Cisco · Unified Communications Manager
- Added to catalog
- 2026-06-25
- Required action
- Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
- CISA remediation due date
- 2026-06-28
CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:-:*:*:*
From (inclusive): 14.0
Before (exclusive): 14su6
cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:session_management:*:*:*
From (inclusive): 14.0
Before (exclusive): 14su6
cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:-:*:*:*
From (inclusive): 15.0
Through (inclusive): 15su4a
cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:session_management:*:*:*
From (inclusive): 15.0
Through (inclusive): 15su4a
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.
Advisories and references
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-ssrf-cXPnHcW
Vendor Advisory
- https://denizhalil.com/2026/06/12/cve-2026-20230-cisco-unified-cm-ssrf/
Exploit · Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20230
US Government Resource