HOMEVULNERABILITIESCVE-2013-3163
HIGHCISA KEVIN THE WILD

CVE-2013-3163

Published: March 30, 2023

EPSS:85.00%probability of exploitation in 30 daysPercentile:99.3th

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.

NVD Source

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.

Added to KEV: 2023-03-30Federal patch deadline: 2023-04-20
Required Action (CISA)

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.

Recommended Action

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.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

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

Mentioned vendors (from description):
Microsoft
CPE data not yet available in NVD for this CVE.

Exploit & PoC Resources

ACTIVE EXPLOITATIONConfirmed exploitation in the wild
External links open in a new tab. Always verify in a controlled environment before use.

All References (2)

Quick Facts

CVE IDCVE-2013-3163
SeverityHIGH
CISA KEVYES — Active Exploitation
ExploitIN THE WILD
EPSS (30d)85.00%
PublishedMar 30, 2023

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
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.