CVE-2013-5065
Published: March 3, 2022
Official Description
Microsoft Windows NDProxy.sys in the kernel contains an improper input validation vulnerability which can allow a local attacker to escalate privileges.
CISA KEV Advisory
Microsoft Windows Kernel Privilege Escalation Vulnerability
Microsoft Windows NDProxy.sys in the kernel contains an improper input validation vulnerability which can allow a local attacker to escalate privileges.
Apply updates per vendor instructions.
Risk Analysis
A flaw in the Microsoft Windows NDProxy.sys kernel driver allows a local attacker to escalate their privileges. The high EPSS score of 0.63758 and its presence in the KEV catalog highlight that this is a critical vulnerability with a high likelihood of exploitation.
This vulnerability has been actively exploited in the wild. Exploitation requires local access to the affected system.
Ensure that all Microsoft Windows systems are kept up-to-date with the latest security patches. Implement strong access controls and principle of least privilege to limit the impact of local privilege escalation attempts.
Technical Analysis
CVE-2013-5065 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-2013-5065 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-2013-5065 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