CVE-2022-26925
Published: July 1, 2022
Official Description
Microsoft Windows Local Security Authority (LSA) contains a spoofing vulnerability where an attacker can coerce the domain controller to authenticate to the attacker using NTLM.
CISA KEV Advisory
Microsoft Windows LSA Spoofing Vulnerability
Microsoft Windows Local Security Authority (LSA) contains a spoofing vulnerability where an attacker can coerce the domain controller to authenticate to the attacker using NTLM.
Apply remediation actions outlined in CISA guidance [https://www.cisa.gov/guidance-applying-june-microsoft-patch].
Risk Analysis
This Microsoft Windows Local Security Authority (LSA) vulnerability allows an attacker to trick a domain controller into authenticating to them using NTLM, leading to spoofing. Its confirmed exploitation by CISA (is_in_kev: true) and high EPSS score of 0.37425 indicate a significant and urgent risk.
This vulnerability has been actively exploited in the wild and is included in the CISA Known Exploited Vulnerabilities Catalog. The nature of the flaw suggests it can be exploited remotely to coerce authentication.
Apply the latest security updates for Microsoft Windows to address this LSA spoofing vulnerability. Implement NTLM relay protections and monitor domain controller authentication logs for suspicious activity.
Technical Analysis
CVE-2022-26925 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2022-26925 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Affected Vendors & Products
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2022-26925 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1