How severe is CVE-2000-0158?

CVE-2000-0158 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2000-0158 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2000-0158?

CVE-2000-0158 primarily affects Sco Openserver. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2000-0158?

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-2000-0158 published?

CVE-2000-0158 was published on 2000-02-16 and last updated on 2026-06-16.

CVE-2000-0158

CVE-2000-0158 is a high-severity vulnerability in Sco Openserver with a CVSS 2.0 base score of 7.5. 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 7.5)
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Sco Openserver
Published: 2000-02-16
Last modified: 2026-06-16

Description

Buffer overflow in MMDF server allows remote attackers to gain privileges via a long MAIL FROM command to the SMTP daemon.

Frequently asked questions

What is CVE-2000-0158?: Buffer overflow in MMDF server allows remote attackers to gain privileges via a long MAIL FROM command to the SMTP daemon.
How severe is CVE-2000-0158?: CVE-2000-0158 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2000-0158 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-0158?: CVE-2000-0158 primarily affects Sco Openserver. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2000-0158?: 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-2000-0158 published?: CVE-2000-0158 was published on 2000-02-16 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:o:sco:openserver:5.0:*:*:*:*:*:*:*
cpe:2.3:o:sco:openserver:5.0.2:*:*:*:*:*:*:*
cpe:2.3:o:sco:openserver:5.0.4:*:*:*:*:*:*:*
cpe:2.3:o:sco:openserver:5.0.5:*:*:*:*:*:*:*

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