CVE-2008-3842

Windows Nt vulnerability

CVSS

4.3

EPSS

20.4%

EPSS pct

97th

Exploited

No known

Request Validation (aka the ValidateRequest filters) in ASP.NET in Microsoft .NET Framework without the MS07-040 update does not properly detect dangerous client input, which allows remote attackers to conduct cross-site scripting (XSS) attacks, as demonstrated by a query string containing a "</" (less-than slash) sequence.

Affected vendor

Microsoft

Affected product

Windows Nt

CVSS vector

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

Weakness type (CWE)

CWE-79 — Cross-Site Scripting (XSS)

Published

2008-08-27

Risk analysis

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

Its EPSS score of 20.4% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2008-3842

Confirm whether Microsoft Windows Nt is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2008-3842.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2008-3842

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