CVE-2017-0222
Published: February 25, 2022
Official Description
A remote code execution vulnerability exists when Internet Explorer improperly accesses objects in memory.
CISA KEV Advisory
Microsoft Internet Explorer Remote Code Execution Vulnerability
A remote code execution vulnerability exists when Internet Explorer improperly accesses objects in memory.
Apply updates per vendor instructions.
Risk Analysis
Internet Explorer has a remote code execution vulnerability due to improper memory access. Its inclusion in the KEV catalog and a high EPSS score of 0.61982 indicate a confirmed and significant risk of exploitation.
This vulnerability has been actively exploited in the wild. Exploitation occurs remotely when Internet Explorer improperly accesses objects in memory.
Users should update Internet Explorer to the latest available version or consider using alternative, more secure browsers. Ensure all Microsoft security updates are applied regularly.
Technical Analysis
CVE-2017-0222 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-2017-0222 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.
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2017-0222 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