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CVE-2008-3842

MEDIUM · CVSS 4.3EPSS 20.4%EU EUVD

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.

Key facts

CVSS score
4.3 (v2.0)
Severity
MEDIUM
CVSS vector
AV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness (CWE)
CWE-79
EPSS score
20.4% (98th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2008-3828)
Published
August 27, 2008
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2008-3828 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

  • microsoft / .net framework
  • microsoft / .net framework
  • microsoft / .net framework
  • microsoft / windows 2000
  • microsoft / windows vista
  • microsoft / windows xp
  • microsoft / windows xp
  • microsoft / windows-nt
  • microsoft / windows-nt
  • microsoft / windows-nt
  • microsoft / windows-nt
  • microsoft / windows-nt
  • microsoft / windows-nt
  • microsoft / windows-nt
  • microsoft / windows-nt
  • microsoft / windows-nt
  • microsoft / windows-nt
  • microsoft / windows-nt
  • microsoft / windows-nt
  • microsoft / windows-nt

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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