CVE-2025-20156CWE-274

Cisco Meeting Management Client-Server Privilege Escalation Vulnerability

Critical · published January 22, 2025

CVSS v3.1
9.9
EPSS
1%
Percentile
67.8
In the wild
Unconfirmed
What it is

🚨 One sneaky API request can turn a lowly user into an admin overlord! This critical flaw in Cisco Meeting Management lets authenticated attackers elevate their privileges without breaking a sweat! 🔥 Think of this as a hotel where the front desk mistakenly gives a guest the master key, allowing them to access all the rooms, including the manager's suite. If a low-tier guest can waltz into the VIP lounge and make themselves at home, chaos will surely ensue! An attacker could gain full control over the edge nodes managed by Cisco Meeting Management, potentially allowing them to access sensitive data, modify configurations, or even disrupt services. With a CVSS score of 9.9, this vulnerability could lead to absolutely devastating consequences if not addressed immediately!

Put simply

Think of this as a hotel where the front desk mistakenly gives a guest the master key, allowing them to access all the rooms, including the manager's suite. If a low-tier guest can waltz into the VIP lounge and make themselves at home, chaos will surely ensue! This privilege escalation vulnerability arises from a lack of proper authorization checks in the REST API, enabling an authenticated user with low privileges to send crafted requests to specific endpoints, elevating their access rights to administrator level.

What to do

An attacker could gain full control over the edge nodes managed by Cisco Meeting Management, potentially allowing them to access sensitive data, modify configurations, or even disrupt services. With a CVSS score of 9.9, this vulnerability could lead to absolutely devastating consequences if not addressed immediately! Patch the affected Cisco Meeting Management systems as soon as possible. Ensure that REST API authorization checks are correctly enforced and conduct an audit of current access controls. Keep monitoring for any unusual activity post-remediation! You've got this! With these steps, you'll reclaim control and strengthen your defenses! 🛡️

The record
Technical detail
CVSS v3.1
9.9 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01193 · 67.8th percentile
Weakness
CWE-274 · Improper Handling of Insufficient Privileges
Published
2025-01-22T16:21Z
EPSS history
Timeline
  • 22 JAN 16:21Z
    Cisco Meeting Management Client-Server Privilege Escalation Vulnerability
    cvelistv5