CVE-2010-0027 — The URL validation functionality in Microsoft Internet Explorer 5

The URL validation functionality in Microsoft Internet Explorer 5.01, 6, 6 SP1, 7 and 8, and the ShellExecute API function in Windows 2000 SP4, XP SP2 and SP3, and Server 2003 SP2, does not properly process input parameters, which allows remote attackers to execute arbitrary loca

01What is this vulnerability?

The URL validation functionality in Microsoft Internet Explorer 5.01, 6, 6 SP1, 7 and 8, and the ShellExecute API function in Windows 2000 SP4, XP SP2 and SP3, and Server 2003 SP2, does not properly process input parameters, which allows remote attackers to execute arbitrary local programs via a crafted URL, aka "URL Validation Vulnerability."

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2010-01-22T21:20:00.000Z
• Last modified: 2024-08-07T00:37:53.828Z

09References

• oval.cisecurity.org — https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3…
• docs.microsoft.com — https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-00…
• www.us-cert.gov — http://www.us-cert.gov/cas/techalerts/TA10-040A.html
• www.securityfocus.com — http://www.securityfocus.com/archive/1/509470/100/0/threaded
• www.zerodayinitiative.com — http://www.zerodayinitiative.com/advisories/ZDI-10-016/
• docs.microsoft.com — https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-00…
• exchange.xforce.ibmcloud.com — https://exchange.xforce.ibmcloud.com/vulnerabilities/55773