CVE-2006-3873

Severity: high (CVSS 7.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 29.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2006-09-12 · updated 2026-06-16

Description

Heap-based buffer overflow in URLMON.DLL in Microsoft Internet Explorer 6 SP1 on Windows 2000 and XP SP1, with versions the MS06-042 patch before 20060912, allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a long URL in a GZIP-encoded website that was the target of an HTTP redirect, due to an incomplete fix for CVE-2006-3869.

Affected products

Microsoft Ie: 6.0-sp1
Microsoft Windows 2000: all versions
Microsoft Windows 2003 Server: 64-bit, itanium, r2, sp1
Microsoft Windows XP Service Pack 3: all versions

References

http://research.eeye.com/html/advisories/published/AD20060912.html
http://securityreason.com/securityalert/1555
http://securitytracker.com/id?1016839
http://weblog.infoworld.com/techwatch/archives/007870.html
http://www.osvdb.org/30834
http://www.securityfocus.com/archive/1/445835/100/0/threaded
http://www.securityfocus.com/bid/19987
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2006/ms06-042
https://exchange.xforce.ibmcloud.com/vulnerabilities/28893
http://research.eeye.com/html/advisories/published/AD20060912.html
http://securityreason.com/securityalert/1555
http://securitytracker.com/id?1016839

Get alerted when CVE-2006-3873 or the next vulnerability affects your stack