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Fencer Vulns
critical 10.0

CVE-1999-1376 in the critical feed json

Buffer overflow in fpcount.exe in IIS 4.0 with FrontPage Server Extensions allows remote attackers to execute arbitrary commands.

published 1999-01-14 27 y ago modified 2026-06-16 4 mo ago also EUVD-1999-1357

cvss
10.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
24.0%
EPSS 24.0% chance of exploitation in 30 days, percentile 97%
public exploits
0
none known

Summary

Buffer overflow in fpcount.exe in IIS 4.0 with FrontPage Server Extensions allows remote attackers to execute arbitrary commands.

Exploit prediction

23.96% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

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.