CVE-2025-34164: Netsupport Ltd Netsupport Manager

Critical severity, CVSS 9.3. EPSS: 0.7% chance of exploitation in the next 30 days.

A heap-based buffer overflow vulnerability in NetSupport Manager 14.x versions prior to 14.12.0000 allows a remote, unauthenticated attacker to cause a denial of service (DoS) or execute arbitrary code.

Affected products

• Netsupport Ltd Netsupport Manager: from 14.0, before 14.12.0000 (fixed in 14.12.0000)

Published 2025-08-30. Last modified 2026-06-17.