Remote Code Execution Vulnerability in Cisco Webex App

CVE-2025-20236

What is CVE-2025-20236?

CVE-2025-20236 is a remote code execution vulnerability found in the Cisco Webex App, a widely used collaboration tool designed for online meetings, video conferencing, and team communication. This flaw allows an unauthenticated remote attacker to manipulate users into downloading arbitrary files through malicious meeting invite links. Once downloaded, these files could enable the attacker to execute commands on the victim's system with the same privileges as the user, potentially leading to unauthorized access or control over the user's environment.

Technical Details

The vulnerability arises from insufficient input validation within the custom URL parser of the Cisco Webex App. When the application processes a crafted meeting invite link, it fails to adequately verify the contents, which can be exploited to trigger the download of arbitrary files. This mechanism could be leveraged by an attacker who successfully convinces a user to interact with the compromised link, initiating the exploit.

Potential Impact of CVE-2025-20236

1. Unauthorized Remote Code Execution: Successful exploitation could allow attackers to execute arbitrary commands on the user's system, leading to full control over the victim's environment and potentially compromising sensitive data.

2. Data Breach Risk: With command execution capabilities, attackers could steal confidential information, leading to data breaches that may have legal implications and damage the organization’s reputation.

3. Increased Malware Distribution: The vulnerability can serve as a vector for distributing additional malware or ransomware, potentially enabling further exploitation and disruption of organizational operations.

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