How severe is CVE-2013-3163?

CVE-2013-3163 has a CVSS score of 8.8/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2013-3163?

Affected package information for CVE-2013-3163 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2013-3163?

No fixed version has been published for CVE-2013-3163 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2013-3163 actively exploited in the wild?

Yes. There are 3 known exploit references for CVE-2013-3163, including 1 documented proof-of-concept exploit on Exploit-DB and 2 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2013-3163?

CVE-2013-3163 has an EPSS (Exploit Prediction Scoring System) score of 84.6%, placing it in the 99th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is CVE-2013-3163 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2013-3163 (Microsoft Internet Explorer Memory Corruption Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2023-03-30. CISA required all US federal civilian agencies to remediate this vulnerability by 2023-04-20. The required action was: The impacted product is end-of-life and should be disconnected if still in use. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2013-3163?

CVE-2013-3163 is classified as Out-of-bounds Write (CWE-787). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Which products and versions are affected by CVE-2013-3163?

CVE-2013-3163 affects microsoft internet explorer (3 versions, e.g. 8, 9, 10). Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2013-3163 published, and has it been updated?

CVE-2013-3163 was published on July 10, 2013 and was last updated on April 22, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2023-03-30 — agencies required to remediate by 2023-04-20

CVE-2013-3163

HIGH

Microsoft Internet Explorer 8 through 10 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer…

Published

Jul 10, 2013

Updated

Apr 22, 2026

Affected

0 pkgs

Patched

None yet

Exploits

3 known

EPSS Exploitation Probability

via FIRST.org ↗

84.6%probability of exploitation in next 30 days

Very High Risk99th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

Microsoft Internet Explorer 8 through 10 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory Corruption Vulnerability," a different vulnerability than CVE-2013-3144 and CVE-2013-3151.

Affected Products

1 product · 3 configurations

Application

internet explorermicrosoft

3 versions

8910

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-28187remotewindows✓ Verified

Microsoft Internet Explorer - CAnchorElement Use-After-Free (MS13-055) (Metasploit)

by Metasploit · Sep 10, 2013

Exploit-DB Source

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2013-3163 in your stack?

O3 detects CVE-2013-3163 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my stack How O3 SCA works