SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2025-24054

Microsoft Windows NTLM Hash Disclosure Spoofing Vulnerability

KEVMEDIUM 5.4EPSS 58.9%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 8 May 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing over a network.

CVSS 3.1
5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
EPSS
58.91% probability · 99th percentile
CISA KEV
Listed 17 April 2025 · due 8 May 2025
Weakness
CWE-73
Affected
microsoft/windows 10 1507 · microsoft/windows 10 1607 · microsoft/windows 10 1809 · microsoft/windows 10 21h2 · microsoft/windows 10 22h2 · microsoft/windows 11 22h2 · microsoft/windows 11 23h2 · microsoft/windows 11 24h2 · microsoft/windows server 2008 · microsoft/windows server 2012 · microsoft/windows server 2016 · microsoft/windows server 2019 · microsoft/windows server 2022 · microsoft/windows server 2022 23h2 · microsoft/windows server 2025
Source
secure@microsoft.com

CISA notes

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24054 ; https://nvd.nist.gov/vuln/detail/CVE-2025-24054

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.