CVE-2025-20354: Cisco Unified Contact Center Express Remote Code Execution Vulnerability
This Cisco advisory covers CVE-2025-20354 in Unified Contact Center Express.
- CVE-2025-20354
Key facts
- Vendor rating
- Critical, CVSS 9.8
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H· base score 9.8, scored by ciscoAttack vector: network. Attack complexity: low. Privileges required: none. User interaction: none. Scope: unchanged. Confidentiality impact: high. Integrity impact: high. Availability impact: high.- Weakness
- CWE-434 Unrestricted Upload of File with Dangerous Type
- CISA SSVC
- Exploitation: none observed. Automatable: yes. Technical impact: total. CISA, .
- CISA KEV
- Not listed (catalogue checked )
- Affected
- Scope: These vulnerabilities affect Cisco Unified CCX, regardless of device configuration.; Release 12.5 SU3 and earlier (first fixed: 12.5 SU3 ES07); Release 15.0 (first fixed: 15.0 ES01)
- Fixed in
- 12.5 SU3 ES07, 15.0 ES01
- Source published
- Source revised
- Listed by VulniPulse
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Affected products & platforms
Description
Multiple vulnerabilities in the Java Remote Method Invocation (RMI) process of Cisco Unified Contact Center Express (Unified CCX) could allow an unauthenticated, remote attacker to upload arbitrary files, bypass authentication, execute arbitrary commands, and elevate privileges to root.
For more information about these vulnerabilities, see the Details section of this advisory.
Text from the source record.
- Scope: These vulnerabilities affect Cisco Unified CCX, regardless of device configuration.
- Release 12.5 SU3 and earlier (first fixed: 12.5 SU3 ES07)
- Release 15.0 (first fixed: 15.0 ES01)
Official advisory · high-confidence parse· fetched ·verify at source
How to fix CVE-2025-20354
Upgrade to a fixed release named by Cisco:
- 12.5 SU3 ES07
- 15.0 ES01
Vendor guidance
- Upgrade to the first fixed release for your train per the Fixed Releases table in this advisory.
- Release 12.5 SU3 and earlier: upgrade to 12.5 SU3 ES07.
- Release 15.0: upgrade to 15.0 ES01.
Workaround status
- There are no workarounds that address these vulnerabilities.
End-of-life dates for Cisco Unified Communications
More Cisco advisories
CVE-2026-20362Oct 7, 2026Cisco Finesse Server-Side Request Forgery VulnerabilityCVE-2025-20375Nov 5, 2025Cisco Unified Contact Center Express Arbitrary File Upload VulnerabilityCVE-2025-20376Nov 5, 2025Cisco Unified Contact Center Express Remote Code Execution VulnerabilityCVE-2025-20277Jun 4, 2025Cisco Unified Contact Center Express Path Traversal VulnerabilityCVE-2025-20114May 21, 2025Cisco Unified Intelligence Center Insecure Direct Object Reference VulnerabilityCVE-2026-76506Nov 4, 2026Cisco UCS Central Software Remote Code Execution Vulnerability
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