Is CVE-2006-5550 being actively exploited?

CVE-2006-5550 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2006-5550?

CVE-2006-5550 has a CVSS 2.0 base score of 4.9 (MEDIUM).

CVE-2006-5550

MEDIUM · CVSS 4.9EPSS 1.0%EU EUVD

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.

Key facts

CVSS score: 4.9 (v2.0)
Severity: MEDIUM
CVSS vector: AV:L/AC:L/Au:N/C:N/I:N/A:C
EPSS score: 1.0% (63th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2006-5535)
Published: October 26, 2006
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2006-5535 in the EU Vulnerability Database. Last updated in EUVD on September 16, 2024.

View on the EU Vulnerability Database

Affected products

freebsd / freebsd
freebsd / freebsd
freebsd / freebsd
openbsd / openbsd

References

http://elegerov.blogspot.com/2006/10/here-is-lame-proof-of-concept-code-for.html(Exploit)
http://secunia.com/advisories/22543(Vendor Advisory)
http://www.securityfocus.com/bid/20713(Exploit)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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