How severe is CVE-2006-4516?

CVE-2006-4516 has a CVSS 2.0 base score of 4.9, rated medium severity.

Is CVE-2006-4516 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-4516?

CVE-2006-4516 affects Freebsd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2006-4516?

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

When was CVE-2006-4516 published?

CVE-2006-4516 was published on 2006-10-12 and last updated on 2026-06-16.

CVE-2006-4516

CVE-2006-4516 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% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Freebsd
Published: 2006-10-12
Last modified: 2026-06-16

Description

Integer signedness error in FreeBSD 6.0-RELEASE allows local users to cause a denial of service (memory corruption and kernel panic) via a PT_LWPINFO ptrace command with a large negative data value that satisfies a signed maximum value check but is used in an unsigned copyout function call.

Frequently asked questions

What is CVE-2006-4516?: Integer signedness error in FreeBSD 6.0-RELEASE allows local users to cause a denial of service (memory corruption and kernel panic) via a PT_LWPINFO ptrace command with a large negative data value that satisfies a signed maximum value check but is used in an unsigned copyout function call.
How severe is CVE-2006-4516?: CVE-2006-4516 has a CVSS 2.0 base score of 4.9, rated medium severity.
Is CVE-2006-4516 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-4516?: CVE-2006-4516 affects Freebsd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-4516?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-4516 published?: CVE-2006-4516 was published on 2006-10-12 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:freebsd:freebsd:6.0:release:*:*:*:*:*:*

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