SSRF in Cisco Unified Communications Manager
CVE-2026-20230
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 forger…
Vulnerability class: SSRF (Server-Side Request Forgery)
EPSS: 0.417 (98.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N.
Affected products
- Cisco Unified Communications Manager — versions 15.0.1.13014-1, 15.0.1.13011-1, 15.0.1.13012-1
- Cisco Unified_communications_manager
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
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.
Public proof-of-concept exploits
References
- psirt@cisco.com (Vendor Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Exploit, Third Party Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2026-20230?
- CVE-2026-20230 is a high-severity vulnerability in Cisco Unified Communications Manager, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.6/10. Published 2026-06-03.
- How severe is CVE-2026-20230?
- High severity. CVSS v3 base score is 8.6 out of 10.
- Is CVE-2026-20230 known to be exploited?
- Yes. CVE-2026-20230 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-06-25), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.