CVE-2006-3873

Ie vulnerability

CVSS

7.5

EPSS

28.6%

EPSS pct

98th

Exploited

No known

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 vendor

Microsoft

Affected product

CVSS vector

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

Published

2006-09-12

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality, partial impact to integrity, partial impact to availability.

Its EPSS score of 28.6% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2006-3873

Confirm whether Microsoft Ie is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2006-3873.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2006-3873

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2006-3873 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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