CVE-2013-3163
Published: March 30, 2023
Official Description
Microsoft Internet Explorer contains a memory corruption vulnerability that allows remote attackers to execute code or cause a denial of service 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 via a crafted website.
The impacted product is end-of-life and should be disconnected if still in use.
Risk Analysis
This memory corruption vulnerability in Microsoft Internet Explorer allows remote attackers to execute arbitrary code or cause a denial of service by luring users to a specially crafted website. The high EPSS score of 0.85003 indicates a very high likelihood of exploitation, and its presence in the KEV catalog confirms active exploitation. This makes it an urgent threat.
This vulnerability is actively being exploited in the wild and is listed in CISA's Known Exploited Vulnerabilities catalog. It is remotely exploitable, requiring a user to visit a malicious website.
Users should upgrade to the latest secure version of Microsoft Internet Explorer or switch to a currently supported web browser. Implement robust web filtering and security policies to prevent access to malicious websites.
Technical Analysis
CVE-2013-3163 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-2013-3163 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 (2)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2013-3163 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