How severe is CVE-2024-1244?

CVE-2024-1244 has a CVSS 4.0 base score of 9.5, rated critical severity.

Is CVE-2024-1244 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2024-1244?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-1244 have an EU (EUVD) identifier?

Yes. CVE-2024-1244 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-17009.

When was CVE-2024-1244 published?

CVE-2024-1244 was published on 2025-06-11 and last updated on 2026-06-17.

CVE-2024-1244

CVE-2024-1244 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Critical (CVSS 4.0 base score 9.5)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-17009
Weakness: CWE-20
Published: 2025-06-11
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2024-1244?: 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.
How severe is CVE-2024-1244?: CVE-2024-1244 has a CVSS 4.0 base score of 9.5, rated critical severity.
Is CVE-2024-1244 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2024-1244?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-1244 have an EU (EUVD) identifier?: Yes. CVE-2024-1244 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-17009.
When was CVE-2024-1244 published?: CVE-2024-1244 was published on 2025-06-11 and last updated on 2026-06-17.

References

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