CVE-2017-0149
Published: May 24, 2022
Official Description
Microsoft Internet Explorer contains a memory corruption vulnerability that allows remote attackers to execute code or cause a denial-of-service (DoS) via a crafted website.
CISA KEV Advisory
Microsoft Internet Explorer Memory Corruption Vulnerability
Microsoft Internet Explorer contains a memory corruption vulnerability that allows remote attackers to execute code or cause a denial-of-service (DoS) via a crafted website.
Apply updates per vendor instructions.
Risk Analysis
This memory corruption vulnerability in Microsoft Internet Explorer allows a remote attacker to execute arbitrary code or cause a denial-of-service by tricking a user into visiting a malicious website. Its high EPSS score of 0.41460 and inclusion in CISA's KEV confirm active and highly likely exploitation, making it an urgent risk for systems still using Internet Explorer.
This vulnerability is actively exploited in the wild and is listed in CISA's KEV. It is remotely exploitable, typically through a user browsing to a specially crafted website.
Migrate away from Internet Explorer to modern, supported web browsers. Ensure all systems are updated with the latest security patches for Internet Explorer if its use is unavoidable, and implement robust web filtering.
Technical Analysis
CVE-2017-0149 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-2017-0149 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-2017-0149 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