How severe is CVE-2006-5550?

CVE-2006-5550 has a CVSS 2.0 base score of 4.9, rated medium severity.

Is CVE-2006-5550 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-5550?

CVE-2006-5550 primarily affects Freebsd. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2006-5550?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2006-5550 published?

CVE-2006-5550 was published on 2006-10-26 and last updated on 2026-06-16.

CVE-2006-5550

CVE-2006-5550 is a medium-severity vulnerability in Freebsd with a CVSS 2.0 base score of 4.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 4.9)
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Freebsd
Published: 2006-10-26
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2006-5550?: 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.
How severe is CVE-2006-5550?: CVE-2006-5550 has a CVSS 2.0 base score of 4.9, rated medium severity.
Is CVE-2006-5550 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-5550?: CVE-2006-5550 primarily affects Freebsd. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-5550?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-5550 published?: CVE-2006-5550 was published on 2006-10-26 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:o:freebsd:freebsd:6.1:release:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:6.1:release_p10:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:6.1:stable:*:*:*:*:*:*
cpe:2.3:o:openbsd:openbsd:4.0:*:*:*:*:*:*:*

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