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How the CVE Works
CVE-2025-30666 is a NULL pointer dereference vulnerability in Zoom Workplace Apps for Windows. When an authenticated user sends a specially crafted network request, the application fails to handle a NULL pointer check, leading to a crash. This results in a denial of service (DoS) condition, disrupting service availability. The flaw occurs due to improper validation of input data in a network-facing component, allowing an attacker to trigger the vulnerability remotely.
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Platform: Zoom Workplace Apps
Version: Windows (pre-5.15.8)
Vulnerability: NULL Pointer Dereference
Severity: Medium
Date: 08/05/2025
Prediction: Patch expected by 09/15/2025
What Undercode Say
Analytics:
$ zoomcli --version $ netstat -ano | findstr "Zoom" $ wireshark -f "tcp port 8801"
Exploit:
import socket target_ip = "192.168.1.100" payload = b"\x00\x00\x00\x00" Malformed NULL trigger sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((target_ip, 8801)) sock.send(payload)
Protection from this CVE:
- Update to Zoom Workplace version 5.15.8+
- Restrict network access to Zoom services
- Enable crash monitoring
Impact:
- Service disruption (DoS)
- Requires authentication for exploitation
- Limited to Windows Zoom clients
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Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
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