CVE-2010-4398
Published: March 28, 2022
Official Description
Stack-based buffer overflow in the RtlQueryRegistryValues function in win32k.sys in Microsoft Windows allows local users to gain privileges, and bypass the User Account Control (UAC) feature.
CISA KEV Advisory
Microsoft Windows Kernel Stack-Based Buffer Overflow Vulnerability
Stack-based buffer overflow in the RtlQueryRegistryValues function in win32k.sys in Microsoft Windows allows local users to gain privileges, and bypass the User Account Control (UAC) feature.
Apply updates per vendor instructions.
Risk Analysis
This high-severity stack-based buffer overflow in the RtlQueryRegistryValues function of win32k.sys in Microsoft Windows allows local users to gain privileges and bypass User Account Control (UAC). The high EPSS score of 0.11997 indicates a significant likelihood of exploitation, making it a critical concern for Windows systems.
This vulnerability is actively being exploited in the wild and is included in CISA's KEV catalog, indicating confirmed exploitation.
Apply the latest security updates for Microsoft Windows to address this buffer overflow and prevent privilege escalation.
Technical Analysis
CVE-2010-4398 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-2010-4398 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-2010-4398 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