CVE-2025-53778
Published: 12 August 2025
Summary
CVE-2025-53778 is a high-severity Improper Authentication (CWE-287) vulnerability in Microsoft Windows Server 2008. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked in the top 15.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 CM-6 (Configuration Settings) and IA-2 (Identification and Authentication (Organizational Users)).
Deeper analysis
CVE-2025-53778 is an improper authentication vulnerability in Windows NTLM, tracked under CWE-287. It affects the NTLM authentication component in Windows and carries a CVSS 3.1 score of 8.8, reflecting network-accessible exploitation with low attack complexity and high impact on confidentiality, integrity, and availability.
An authorized attacker with existing network access can exploit the flaw to elevate privileges, potentially gaining full control over affected systems without user interaction. The attack occurs over the network and does not require the victim to perform any action.
Microsoft has published official guidance through its Security Response Center at the referenced MSRC advisory. Third-party resources also provide detection and mitigation scripts specifically addressing improper authentication in Windows NTLM. The associated EPSS score remains low and unchanged at 0.0214, indicating limited observed exploitation interest to date.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-24285
Vulnerability details
Improper authentication in Windows NTLM allows an authorized attacker to elevate privileges over a network.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Improper auth bypass in NTLM directly enables remote privilege escalation from low to high privileges on Windows systems.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Requires timely identification, reporting, and correction of system flaws like the NTLM improper authentication vulnerability through vendor patches and updates.
Establishes secure configuration settings to disable or restrict use of the vulnerable NTLM protocol, aligning with provided mitigation scripts.
Mandates robust identification and authentication for organizational users over networks, directly countering the improper authentication in Windows NTLM.