CVE-2013-7331
MEDIUMCISA KEVEPSS 99th pctlDescription
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 to fix
Actively exploited, no published fix found yet
CISA required action: Apply updates per vendor instructions.
Federal remediation due: 2022-06-15
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Exploit Intelligence
Very high risk: more likely to be exploited than 99% of all known CVEs.
Microsoft Internet Explorer Information Disclosure Vulnerability
An information disclosure vulnerability exists in Internet Explorer which allows resources loaded into memory to be queried. This vulnerability could allow an attacker to detect anti-malware applications.
Apply updates per vendor instructions.
Remediation due: 2022-06-15
References
Related Vulnerabilities
Other CWE-209 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-29059 | High | 7.5 | 99% | KEV | - |
| CVE-2021-22145 | Medium | 6.5 | 76% | - | - |
| CVE-2010-3332 | Medium | 6.4 | 67% | - | - |
| CVE-2025-62168 | Critical | 10.0 | 63% | - | Fix |
| CVE-2025-47813 | Medium | 4.3 | 61% | KEV | Fix |
| CVE-2021-30357 | Medium | 5.3 | 23% | - | - |
Common questions
How do I fix CVE-2013-7331?
No published fix for CVE-2013-7331 has been found yet. It is on the CISA Known Exploited Vulnerabilities list; federal agencies must remediate by 2022-06-15. Apply the vendor's mitigations per CISA's guidance.
Is CVE-2013-7331 being actively exploited?
Yes. CVE-2013-7331 is listed in the CISA Known Exploited Vulnerabilities catalog, which means exploitation has been observed in the wild. US federal agencies were required to remediate it by 2022-06-15. Treat it as a priority whatever its CVSS score says.
How severe is CVE-2013-7331?
CVE-2013-7331 has a CVSS v3 base score of 6.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-22.