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Fencer Vulns
medium 4.9

CVE-2006-5550 json

The kernel in FreeBSD 6.1 and OpenBSD 4.0 allows local users to cause a denial of service via unspecified vectors involving certain ioctl r…

published 2006-10-26 20 y ago modified 2026-06-16 4 mo ago also EUVD-2006-5535

cvss
4.9
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits
1
Exploit-DB

Summary

The kernel in FreeBSD 6.1 and OpenBSD 4.0 allows local users to cause a denial of service via unspecified vectors involving certain ioctl requests to /dev/crypto.

Timeline

  1. First public exploit (EDB-2639)
  2. Published

Exploit prediction

0.99% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-2639 FreeBSD 6.1 - '/dev/crypto' Local Kernel Denial of Service dos, 2006-10-24
  • securityfocus.com http://www.securityfocus.com/bid/20713 referenced PoC, tagged "exploit" by a source, unverified
  • elegerov.blogspot.com http://elegerov.blogspot.com/2006/10/here-is-lame-proof-of-concept-code-for.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 4.9 AV:L/AC:L/Au:N/C:N/I:N/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.