CVE-2025-30670
📋 TL;DR
A null pointer dereference vulnerability in Zoom Workplace Apps for Windows allows authenticated users to cause denial of service through network access. This affects users running vulnerable versions of Zoom Workplace applications on Windows systems. The vulnerability requires authentication but can be exploited remotely.
💻 Affected Systems
- Zoom Workplace Apps
📦 What is this software?
Rooms by Zoom
⚠️ Risk & Real-World Impact
Worst Case
Complete application crash leading to denial of service for Zoom Workplace functionality, potentially disrupting business communications and collaboration.
Likely Case
Application instability or crashes affecting individual users' Zoom Workplace applications, requiring restart of the application.
If Mitigated
Minimal impact with proper network segmentation and authentication controls limiting exploit attempts.
🎯 Exploit Status
Exploitation requires authenticated access but appears straightforward based on CWE-476 classification.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Zoom security bulletin ZSB-25015 for patched versions
Vendor Advisory: https://www.zoom.com/en/trust/security-bulletin/zsb-25015
Restart Required: Yes
Instructions:
1. Open Zoom Workplace application
2. Navigate to Settings > About
3. Check for updates or download latest version from Zoom website
4. Install update and restart application
🔧 Temporary Workarounds
Network Segmentation
allRestrict network access to Zoom Workplace applications to trusted networks only
Authentication Controls
allImplement strong authentication mechanisms and monitor for suspicious authentication attempts
🧯 If You Can't Patch
- Implement network segmentation to limit access to Zoom Workplace applications
- Monitor for application crashes and investigate suspicious authentication patterns
🔍 How to Verify
Check if Vulnerable:
Check Zoom Workplace version against affected versions listed in ZSB-25015 security bulletinCheck Version:
In Zoom Workplace: Settings > About to view current versionVerify Fix Applied:
Verify Zoom Workplace version is updated to patched version specified in security bulletin📡 Detection & Monitoring
Log Indicators:
- Unexpected Zoom Workplace application crashes
- Multiple authentication attempts from single source
- Access logs showing network connections to Zoom Workplace services
Network Indicators:
- Unusual network traffic patterns to Zoom Workplace ports
- Multiple connection attempts from single IP addresses
SIEM Query:
source="zoom" AND (event_type="crash" OR event_type="error") AND process_name="Zoom Workplace"