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Fencer Vulns
high 7.5

CVE-2007-5256 json

Multiple stack-based buffer overflows in FSD 2.052 d9 and earlier, and FSFDT FSD 3.000 d9 and earlier, allow (1) remote attackers to execut…

published 2007-10-06 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-5236

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
7.1%
EPSS 7.1% chance of exploitation in 30 days, percentile 94%
public exploits
3
Exploit-DB

Summary

Multiple stack-based buffer overflows in FSD 2.052 d9 and earlier, and FSFDT FSD 3.000 d9 and earlier, allow (1) remote attackers to execute arbitrary code via a long HELP command on TCP port 3010 to the sysuser::exechelp function in sysuser.cc and (2) remote authenticated users to execute arbitrary code via long commands on TCP port 6809 to the servinterface::sendmulticast function in servinterface.cc, as demonstrated by a PIcallsign command.

Timeline

  1. First public exploit (EDB-30628)
  2. Published

Exploit prediction

7.07% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-30628 FSD 2.052/3.000 - 'servinterface.cc servinterface::sendmulticast' 'PIcallsign' Command Remote Overflow dos, 2007-10-01
  • EDB-30627 FSD 2.052/3.000 - 'sysuser.cc sysuser::exechelp' 'HELP' Remote Overflow remote, 2007-10-01
  • EDB-4484 FSFDT v3.000 d9 - 'HELP' Remote Buffer Overflow remote, 2007-10-04
  • aluigi.altervista.org http://aluigi.altervista.org/adv/fsdbof-adv.txt 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

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

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.