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Fencer Vulns
high 7.5

CVE-2002-1973 in the critical feed json

Buffer overflow in CHttpServer::OnParseError in the ISAPI extension (Isapi.cpp) when built using Microsoft Foundation Class (MFC) static li…

published 2002-12-31 23 y ago modified 2026-06-16 4 mo ago also EUVD-2002-1952

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
40.0%
EPSS 40.0% chance of exploitation in 30 days, percentile 98%
public exploits
1
Exploit-DB

Summary

Buffer overflow in CHttpServer::OnParseError in the ISAPI extension (Isapi.cpp) when built using Microsoft Foundation Class (MFC) static libraries in Visual C++ 5.0, and 6.0 before SP3, as used in multiple products including BadBlue, allows remote attackers to cause a denial of service (access violation and crash) and possibly execute arbitrary code via a long query string that causes a parsing error.

Patch / fix

Timeline

  1. First public exploit (EDB-21601)
  2. Published

Exploit prediction

40.05% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-21601 Microsoft Foundation Class Library 7.0 - ISAPI Buffer Overflow remote, 2002-07-08
  • securityfocus.com http://www.securityfocus.com/bid/5188 referenced PoC, tagged "exploit" by a source, unverified
  • archives.neohapsis.com http://archives.neohapsis.com/archives/bugtraq/2002-07/0135.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.