CVE-2026-20098CWE-434

Cisco Meeting Management Arbitrary File Upload Vulnerability

High · published February 4, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
35.2
In the wild
Unconfirmed
What it is

🚨 An authenticated user can become a puppet master! A crafty HTTP request is all it takes for an attacker to upload files and execute commands on vulnerable Cisco Meeting Management systems. ⚡ Think of it like a hotel employee who finds a way to bypass the front desk and sneak into the manager's office – once inside, they can change the locks, steal sensitive files, or even hijack control of the whole place! If exploited, this vulnerability would allow attackers to gain root permissions, giving them full control over the system. They could upload malicious files that compromise sensitive data or disrupt services, leading to devastating consequences for the organization and its users. Yikes!

Put simply

Think of it like a hotel employee who finds a way to bypass the front desk and sneak into the manager's office – once inside, they can change the locks, steal sensitive files, or even hijack control of the whole place! This vulnerability is due to improper input validation in the Certificate Management feature of Cisco Meeting Management, allowing an authenticated attacker to execute arbitrary commands and elevate privileges through crafted HTTP requests.

What to do

If exploited, this vulnerability would allow attackers to gain root permissions, giving them full control over the system. They could upload malicious files that compromise sensitive data or disrupt services, leading to devastating consequences for the organization and its users. Yikes! Immediately update to the latest patched version of Cisco Meeting Management, and review user roles and permissions to ensure that only necessary personnel have access to sensitive features. Regularly audit your systems for any unauthorized modifications. 🛡️ You've got this! Follow these steps and you'll be well on your way to locking down your system. 🦸

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00419 · 35.2th percentile
Weakness
CWE-434 · Unrestricted Upload of File with Dangerous Type
Published
2026-02-04T16:11Z
EPSS history
Timeline
  • 04 FEB 16:11Z
    Cisco Meeting Management Arbitrary File Upload Vulnerability
    cvelistv5