CVE-2010-1885
HIGHEPSS 99th pctlDescription
The MPC::HexToNum function in helpctr.exe in Microsoft Windows Help and Support Center in Windows XP and Windows Server 2003 does not properly handle malformed escape sequences, which allows remote attackers to bypass the trusted documents whitelist (fromHCP option) and execute arbitrary commands via a crafted hcp:// URL, aka "Help Center URL Validation Vulnerability."
CVSS v2 Vector
No CVSS vector data available.
Exploit Intelligence
Very high risk: more likely to be exploited than 99% of all known CVEs.
References
- http://archives.neohapsis.com/archives/fulldisclosure/2010-06/0197.html
- http://blogs.technet.com/b/msrc/archive/2010/06/10/windows-help-vulnerability-disclosure.aspx
- http://blogs.technet.com/b/srd/archive/2010/06/10/help-and-support-center-vulnerability-full-disclosure-posting.aspx
- http://secunia.com/advisories/40076
- http://www.exploit-db.com/exploits/13808
- http://www.kb.cert.org/vuls/id/578319
- http://www.microsoft.com/technet/security/advisory/2219475.mspx
- http://www.securityfocus.com/archive/1/511774/100/0/threaded
- http://www.securityfocus.com/archive/1/511783/100/0/threaded
- http://www.securityfocus.com/bid/40725
- http://www.securitytracker.com/id?1024084
- http://www.us-cert.gov/cas/techalerts/TA10-194A.html
- http://www.vupen.com/english/advisories/2010/1417
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-042
- https://exchange.xforce.ibmcloud.com/vulnerabilities/59267
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11733
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Start freeThis 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 2026-04-29.