How severe is CVE-2000-0996?

CVE-2000-0996 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-2000-0996 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2000-0996?

CVE-2000-0996 affects Openbsd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2000-0996?

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-2000-0996 published?

CVE-2000-0996 was published on 2000-12-19 and last updated on 2026-06-16.

CVE-2000-0996

CVE-2000-0996 is a high-severity vulnerability in Openbsd 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: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Openbsd
Published: 2000-12-19
Last modified: 2026-06-16

Description

Format string vulnerability in OpenBSD su program (and possibly other BSD-based operating systems) allows local attackers to gain root privileges via a malformed shell.

Frequently asked questions

What is CVE-2000-0996?: Format string vulnerability in OpenBSD su program (and possibly other BSD-based operating systems) allows local attackers to gain root privileges via a malformed shell.
How severe is CVE-2000-0996?: CVE-2000-0996 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-2000-0996 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-0996?: CVE-2000-0996 affects Openbsd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2000-0996?: 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-2000-0996 published?: CVE-2000-0996 was published on 2000-12-19 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*

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