How severe is CVE-2013-7331?

CVE-2013-7331 has a CVSS score of 6.5/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2013-7331?

Affected package information for CVE-2013-7331 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2013-7331?

No fixed version has been published for CVE-2013-7331 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-2013-7331 actively exploited in the wild?

Yes. There are 4 known exploit references for CVE-2013-7331, including 4 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-2013-7331?

CVE-2013-7331 has an EPSS (Exploit Prediction Scoring System) score of 81.8%, 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-2013-7331 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2013-7331 (Microsoft Internet Explorer Information Disclosure Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2022-05-25. CISA required all US federal civilian agencies to remediate this vulnerability by 2022-06-15. The required action was: Apply updates per vendor instructions. 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-2013-7331?

CVE-2013-7331 is classified as CWE-209 (CWE-209). 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-2013-7331?

CVE-2013-7331 affects microsoft internet explorer (6 versions, e.g. 6, 7, 8…). Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2013-7331 published, and has it been updated?

CVE-2013-7331 was published on February 26, 2014 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 2022-05-25 — agencies required to remediate by 2022-06-15

CVE-2013-7331

MEDIUM

The Microsoft.XMLDOM ActiveX control in Microsoft Windows 8.1 and earlier allows remote attackers to determine the existence of local pathnames, UNC share pathnames, intranet hostnames,…

Published

Feb 26, 2014

Updated

Apr 22, 2026

Affected

0 pkgs

Patched

None yet

Exploits

4 known

EPSS Exploitation Probability

via FIRST.org ↗

81.8%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

The Microsoft.XMLDOM ActiveX control in Microsoft Windows 8.1 and earlier allows remote attackers to determine the existence of local pathnames, UNC share pathnames, intranet hostnames, and intranet IP addresses by examining error codes, as demonstrated by a res:// URL, and exploited in the wild in February 2014.

Affected Products

1 product · 6 configurations

Application

internet explorermicrosoft

6 versions

67891011

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.

The Microsoft.XMLDOM ActiveX control in Microsoft Windows 8.1 and earlie…

soroush.secproject.comNVDMay 2019

The Microsoft.XMLDOM ActiveX control in Microsoft Windows 8.1 and earlie…

github.comMetasploitSep 2020

The Microsoft.XMLDOM ActiveX control in Microsoft Windows 8.1 and earlie…

nvd.nist.govNVDMay 2019

The Microsoft.XMLDOM ActiveX control in Microsoft Windows 8.1 and earlie…

cisa.govCISAMay 2022

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2013-7331 in your stack?

O3 detects CVE-2013-7331 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

CVSS Score

6.5/10

CVSS v3 base score

Vector breakdown

AV:Attack Vector

Network

AC:Attack Complexity

Low

PR:Privileges Required

None

UI:User Interaction

None

S:Scope

Unchanged

C:Confidentiality

Low

I:Integrity

None

A:Availability

Low

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

CWE Classification

CWE-209CWE-209

Weaponization

No known public exploit tooling found.

Timeline

Disclosed

Feb 26, 2014

First exploit

May 14, 2019

KEV added

May 25, 2022

Last updated

Apr 22, 2026

Identifiers

CVE-2013-7331

References

Advisoryfireeye.com Advisorykb.cert.org Advisorysecuritytracker.com Advisoryfireeye.com Advisorykb.cert.org Advisorysecuritytracker.com Fixdocs.microsoft.com Fixdocs.microsoft.com Exploit / PoCsoroush.secproject.com Exploit / PoCsoroush.secproject.com Webcisa.gov

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