How severe is CVE-2001-0063?

CVE-2001-0063 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-2001-0063 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-0063?

CVE-2001-0063 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-2001-0063?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2001-0063 published?

CVE-2001-0063 was published on 2001-02-12 and last updated on 2026-06-16.

CVE-2001-0063

CVE-2001-0063 is a high-severity vulnerability in Freebsd with a CVSS 2.0 base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.2)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Freebsd
Published: 2001-02-12
Last modified: 2026-06-16

Description

procfs in FreeBSD and possibly other operating systems allows local users to bypass access control restrictions for a jail environment and gain additional privileges.

Frequently asked questions

What is CVE-2001-0063?: procfs in FreeBSD and possibly other operating systems allows local users to bypass access control restrictions for a jail environment and gain additional privileges.
How severe is CVE-2001-0063?: CVE-2001-0063 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-2001-0063 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-0063?: CVE-2001-0063 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-2001-0063?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2001-0063 published?: CVE-2001-0063 was published on 2001-02-12 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:o:freebsd:freebsd:3.5.1:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:4.1:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:4.1.1:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:4.2:*:*:*:*:*:*:*

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