CVE-2025-20358CWE-306

CVE-2025-20358

Critical · published November 5, 2025

CVSS v3.1
9.4
EPSS
1%
Percentile
60.0
In the wild
Unconfirmed
What it is

🚨 A crafty redirection is all it takes to bypass authentication in Cisco's CCX Editor, letting attackers gain administrative powers with zero authentication needed! 🔥 Think of it like a sneaky impersonator who tricks the doorman into letting them into a VIP party, then proceeds to make all the decisions—total chaos in the hands of someone uninvited! An attacker could run wild, creating and executing arbitrary scripts on the underlying operating system, potentially leading to a complete takeover of the Unified CCX server. This is absolutely devastating for your systems, as sensitive data could be compromised and service integrity shattered!

Put simply

Think of it like a sneaky impersonator who tricks the doorman into letting them into a VIP party, then proceeds to make all the decisions—total chaos in the hands of someone uninvited! The vulnerability stems from improper authentication mechanisms in the CCX Editor's communication with the Unified CCX server, allowing attackers to redirect the authentication flow to their malicious servers.

What to do

An attacker could run wild, creating and executing arbitrary scripts on the underlying operating system, potentially leading to a complete takeover of the Unified CCX server. This is absolutely devastating for your systems, as sensitive data could be compromised and service integrity shattered! Patch your system immediately to the latest version provided by Cisco. Review network configurations to ensure secure communication, and implement strict access controls to safeguard against unexpected redirection attempts. You've got this! Secure your systems and keep those imposters out! 🛡️

The record
Technical detail
CVSS v3.1
9.4 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
CVSS v4.0
Not supplied
EPSS
0.00923 · 60.0th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2025-11-05T22:15Z
Affected products (2)
ProductVersionsFixed in
cisco/unified_contact_center_express< 12.5\(1\)_su03_es0712.5\(1\)_su03_es07
cisco/unified_contact_center_expressall versions—
References (1)
EPSS history
Timeline
  • 05 NOV 16:31Z
    Cisco Unified Contact Center Express Editor Authentication Bypass Vulnerability
    cvelistv5