Unspecified vulnerability in Microsoft Internet Information Services (IIS) 5.1 on Windows XP SP3, when directory-based Basic Authentication…

published 2010-09-15 16y ago modified 2026-06-16 4mo ago also EUVD-2010-2735

cvss: 6.8; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 31.1%; EPSS 31.1% chance of exploitation in 30 days, percentile 98%
public exploits: 2; Metasploit and Exploit-DB

Unspecified vulnerability in Microsoft Internet Information Services (IIS) 5.1 on Windows XP SP3, when directory-based Basic Authentication is enabled, allows remote attackers to bypass intended access restrictions and execute ASP files via a crafted request, aka "Directory Authentication Bypass Vulnerability."

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Timeline

2010-07-02 First public exploit (Metasploit auxiliary/admin/http/iis_auth_bypass)
2010-09-15 Published

Exploit prediction

31.12% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

Metasploit auxiliary/admin/http/iis_auth_bypass MS10-065 Microsoft IIS 5 NTFS Stream Authentication Bypass metasploit auxiliary, normal rank, 2010-07-02
EDB-14179 Microsoft IIS 5.0 - Authentication Bypass (MS10-065) remote, 2010-07-02

CVSS scores

assigned by	version	score	vector
NVD	2.0	6.8	AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-287 Improper Authentication

References

docs.microsoft.com /en-us/security-updates/securitybulletins/2010/ms10-065
vendor-advisory
oval.cisecurity.org /repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6942
vdb-entry, signature

Sources

CVE List CVE-2010-2731
NVD CVE-2010-2731

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