CVE-2017-0213
Published: March 28, 2022
Official Description
Microsoft Windows COM Aggregate Marshaler allows for privilege escalation when an attacker runs a specially crafted application.
CISA KEV Advisory
Microsoft Windows Privilege Escalation Vulnerability
Microsoft Windows COM Aggregate Marshaler allows for privilege escalation when an attacker runs a specially crafted application.
Apply updates per vendor instructions.
Risk Analysis
This vulnerability in Microsoft Windows COM Aggregate Marshaler allows an attacker to escalate privileges by running a specially crafted application. Its high EPSS score of 0.92691 and inclusion in CISA's KEV indicate a high likelihood of exploitation, making it an urgent concern.
This vulnerability is actively exploited in the wild and is part of CISA's KEV, signifying that it is a known and present threat. Attackers can leverage this locally to gain elevated privileges.
Apply the latest security updates from Microsoft to patch the COM Aggregate Marshaler component. Implement least privilege principles to limit the impact of successful privilege escalation attempts.
Technical Analysis
CVE-2017-0213 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-2017-0213 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-2017-0213 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