CVE-2013-7331

CVE-2013-7331 is a medium-severity vulnerability in Microsoft Internet Explorer with a CVSS 3.x base score of 6.5. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-05-25). The underlying weakness is classified as CWE-209.

Key facts

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.

Frequently asked questions

What is CVE-2013-7331?
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.
How severe is CVE-2013-7331?
CVE-2013-7331 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability low.
Is CVE-2013-7331 being actively exploited?
Yes. CVE-2013-7331 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-05-25, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2013-7331?
CVE-2013-7331 primarily affects Microsoft Internet Explorer. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-7331?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2013-7331 have an EU (EUVD) identifier?
Yes. CVE-2013-7331 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2013-7105. It is also flagged as exploited in the EUVD (since 2022-05-25).
When was CVE-2013-7331 published?
CVE-2013-7331 was published on 2014-02-26 and last updated on 2026-06-17.

References

Affected products (6)

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