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Vulnerability record · CVE-2001-0904 · published 20 November 2001

CVE-2001-0904: Microsoft internet explorer vulnerability

Microsoft · Internet Explorer

Internet Explorer 5.5 and 6 with the Q312461 (MS01-055) patch modifies the HTTP_USER_AGENT (UserAgent) information that indicates that the patch has been installed, which could allow remote malicious web sites to more easily identify and exploit vulnerable clients.

5.0 CVSS 2.0 Medium EPSS 7.0% · top 6.1%
5.0CVSS 2.0 base score
7.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
16 Jun 2026Last modified by NVD

Description

Internet Explorer 5.5 and 6 with the Q312461 (MS01-055) patch modifies the HTTP_USER_AGENT (UserAgent) information that indicates that the patch has been installed, which could allow remote malicious web sites to more easily identify and exploit vulnerable clients.

AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://marc.info/?l=bugtraq&m=100619268115798&w=2
http://www.iss.net/security_center/static/7581.php
http://www.securityfocus.com/bid/3556
http://marc.info/?l=bugtraq&m=100619268115798&w=2
http://www.iss.net/security_center/static/7581.php
http://www.securityfocus.com/bid/3556

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2001-0904), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.