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CVE-2025-20358

Cisco Unified Contact Center Express authentication bypass

9.4 CRITICALEPSS 0.92%
  1. Published5 Nov 2025

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

Affected products

Cisco Unified Contact Center Express< 12.5\(1\)_su03_es07 · 15.0

Remediation

Fixed in
Cisco Unified Contact Center Express≥ 12.5\(1\)_su03_es07

References

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Frequently asked

Is CVE-2025-20358 being actively exploited?

CVE-2025-20358 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.92%.

How severe is CVE-2025-20358?

CVE-2025-20358 has a CVSS 3.1 base score of 9.4, rated critical. EPSS estimates a 0.92% probability of exploitation.

Which products are affected by CVE-2025-20358?

Affected products include Cisco Unified Contact Center Express.

How do I fix CVE-2025-20358?

Upgrade affected software to a fixed version, for example Cisco Unified Contact Center Express 12.5\(1\)_su03_es07 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-20358 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.