CVE-2024-1244: Ossec Ossec-Hids Agent

Critical severity, CVSS 9.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Improper input validation in the OSSEC HIDS agent for Windows prior to version 3.8.0 allows an attacker in with control over the OSSEC server or in possession of the agent's key to configure the agent to connect to a malicious UNC path. This results in the leakage of the machine account NetNTLMv2 hash, which can be relayed for remote code execution or used to escalate privileges to SYSTEM via AD CS certificate forging and other similar attacks.

Affected products

• Ossec Ossec-Hids Agent: version 3.8.0 only

Published 2025-06-11. Last modified 2026-06-17.