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Fencer Vulns
high 7.5

CVE-2003-1247 json

Multiple buffer overflows in H-Sphere WebShell 2.3 allow remote attackers to execute arbitrary code via (1) a long URL content type in CGI:…

published 2003-12-31 22 y ago modified 2026-06-16 4 mo ago also EUVD-2003-1237

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
10.0%
EPSS 10.0% chance of exploitation in 30 days, percentile 95%
public exploits
2
Exploit-DB

Summary

Multiple buffer overflows in H-Sphere WebShell 2.3 allow remote attackers to execute arbitrary code via (1) a long URL content type in CGI::readFile, (2) a long path in diskusage, and (3) a long fname in flist.

Patch / fix

Timeline

  1. First public exploit (EDB-22129)
  2. Published

Exploit prediction

9.95% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-22129 H-Sphere WebShell 2.4 - Remote Command Execution remote, 2003-01-06
  • EDB-22128 H-Sphere WebShell 2.4 - Local Privilege Escalation local, 2003-01-06
  • securityfocus.com http://www.securityfocus.com/archive/1/305313 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.