---
title: "CVE-2026-20230: Cisco Unified Communications Manager… | CubePath"
description: "A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME)…"
language: en
source: https://cubepath.com/security/cve/CVE-2026-20230
---

# CVE-2026-20230: Cisco Unified Communications Manager… | CubePath

## Description

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.

Official description from the CVE record, published by cisco. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-20230)

## Key data

### CVSS 3.1 High 8.6

Score published by cisco in the CVE record.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

| Metric                 | Value   | What it means                                                                       |
| ---------------------- | ------- | ----------------------------------------------------------------------------------- |
| Attack vector          | Network | The vulnerable component can be reached over a network, possibly from the Internet. |
| Attack complexity      | Low     | No special conditions are needed. The attack can be repeated at will.               |
| Privileges required    | None    | No account or privileges are needed.                                                |
| User interaction       | None    | No action from any user is needed.                                                  |
| Scope                  | Changed | The impact can reach other components beyond the vulnerable one.                    |
| Confidentiality impact | None    | No effect on the secrecy of data.                                                   |
| Integrity impact       | High    | Serious or total effect on the trustworthiness of data.                             |
| Availability impact    | None    | No effect on availability.                                                          |

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) .

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.88528 (88.5% probability)

Percentile

99.8%

Scores of

Nov 10, 2026

Model

v2026.06.15

### CISA Known Exploited Vulnerabilities

This CVE is listed in the CISA KEV catalog.

Name in the catalog

Cisco Unified Communications Manager Server-Side Request Forgery (SSRF) Vulnerability

Added to the catalog

Jun 25, 2026

Federal due date

Jun 28, 2026

### CISA assessment as of Jun 26, 2026

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.

Exploitation

Recorded by CISA as active

Automatable

no

Technical impact

total

### Weakness (CWE)

CWE catalog version 5.0.

CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license.

- [CWE-918](https://cwe.mitre.org/data/definitions/918.html) Server-Side Request Forgery

## Affected products

Products listed in the CVE record, as the CNA published them.

- Cisco Unified Communications Manager

  - affected: 14
  - affected: 14SU1
  - affected: 14SU2
  - affected: 14SU3
  - affected: 15
  - affected: 15SU1
  - affected: 14SU4
  - affected: 14SU4a
  - affected: 15SU1a
  - affected: 15SU2
  - affected: 15.0.1.13010-1
  - affected: 15.0.1.13011-1
  - affected: 15.0.1.13012-1
  - affected: 15.0.1.13013-1
  - affected: 15.0.1.13014-1
  - affected: 15.0.1.13015-1
  - affected: 15.0.1.13016-1
  - affected: 15.0.1.13017-1
  - affected: 15SU3a
  - affected: 14SU5
  - affected: 15SU4
  - affected: 15SU4a

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [cisco-sa-cucm-ssrf-cXPnHcW](https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-ssrf-cXPnHcW)  (sec.cloudapps.cisco.com)

## Timeline

1. ID reserved Oct 8, 2025
2. Record published Jun 3, 2026
3. Added to CISA KEV Jun 25, 2026
4. Record last updated Oct 7, 2026

## Look up another CVE

## About CubePath

CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.

[Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection)

Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:11 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)