# CVE-2025-20358: Cisco Unified Contact Center Express Editor Authentication Bypass Vulnerability

> Unauthenticated attackers can bypass authentication to create and execute arbitrary scripts on Cisco Unified CCX servers, leading to code execution.

- **Severity:** Critical 9.4 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Nov 2025
- **Updated:** 26 Feb 2026
- **Also known as:** GHSA-w3hc-3vf9-xjj9

## What is CVE-2025-20358?

CVE-2025-20358 is a critical authentication bypass vulnerability in Cisco Unified Contact Center Express, published on 5 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability in the Contact Center Express (CCX) Editor application of Cisco Unified CCX could allow an unauthenticated, remote attacker to bypass authentication and obtain administrative permissions pertaining to script creation and execution.

This vulnerability is due to improper authentication mechanisms in the communication between the CCX Editor and an affected Unified CCX server. An attacker could exploit this vulnerability by redirecting the authentication flow to a malicious server and tricking the CCX Editor into believing the authentication was successful. A successful exploit could allow the attacker to create and execute arbitrary scripts on the underlying operating system of an affected Unified CCX server, as an internal non-root user account.

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2025-20358?

It affects 1 product.


Products: Cisco Unified Contact Center Express.

## How do I fix CVE-2025-20358?

No fix has been published for CVE-2025-20358 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-20358 being exploited?

There is no known exploitation of CVE-2025-20358 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Unified Contact Center Express

- [CVE-2025-20354](https://insights.sbomify.com/CVE-2025-20354/): Cisco Unified Contact Center Express Remote Code Execution Vulnerability (critical 9.8)
- [CVE-2020-3280](https://insights.sbomify.com/CVE-2020-3280/): Cisco Unified Contact Center Express Remote Code Execution Vulnerability (critical 9.8)
- [CVE-2018-0403](https://insights.sbomify.com/CVE-2018-0403/): Information disclosure in Cisco Unified Contact Center Express unknown (critical 9.8)
- [CVE-2022-20658](https://insights.sbomify.com/CVE-2022-20658/): Privilege escalation in Cisco Unified Contact Center Domain Manager (critical 9.6)
- [CVE-2018-0402](https://insights.sbomify.com/CVE-2018-0402/): Cross-site request forgery in Cisco Unified Contact Center Express unknown (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-20358 and fix it if it is affected.

What it is: CVE-2025-20358 is a critical authentication bypass vulnerability in Cisco Unified Contact Center Express, published on 5 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-20358 in the wild and no public exploit code.

Affected product: Cisco Unified Contact Center Express. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-20358/ (Markdown: https://insights.sbomify.com/CVE-2025-20358/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-20358
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-20358
- OSV: https://osv.dev/vulnerability/CVE-2025-20358

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-20358/
Summaries are generated and may contain mistakes; the official description above is the record.