How severe is CVE-1999-0731?

CVE-1999-0731 has a CVSS 2.0 base score of 4.6, rated medium severity.

Is CVE-1999-0731 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0731?

CVE-1999-0731 primarily affects Caldera Openlinux. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-0731?

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

When was CVE-1999-0731 published?

CVE-1999-0731 was published on 1999-06-23 and last updated on 2026-06-16.

CVE-1999-0731

CVE-1999-0731 is a medium-severity vulnerability in Caldera Openlinux with a CVSS 2.0 base score of 4.6. 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 4.6)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Caldera Openlinux
Published: 1999-06-23
Last modified: 2026-06-16

Description

The KDE klock program allows local users to unlock a session using malformed input.

Frequently asked questions

What is CVE-1999-0731?: The KDE klock program allows local users to unlock a session using malformed input.
How severe is CVE-1999-0731?: CVE-1999-0731 has a CVSS 2.0 base score of 4.6, rated medium severity.
Is CVE-1999-0731 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0731?: CVE-1999-0731 primarily affects Caldera Openlinux. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0731?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-1999-0731 published?: CVE-1999-0731 was published on 1999-06-23 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:o:caldera:openlinux:1.3:*:*:*:*:*:*:*
cpe:2.3:o:caldera:openlinux:2.2:*:*:*:*:*:*:*

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