How severe is CVE-1999-0451?

CVE-1999-0451 has a CVSS 2.0 base score of 2.1, rated low severity.

Is CVE-1999-0451 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0451?

CVE-1999-0451 primarily affects Linux Linux Kernel. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-0451?

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

When was CVE-1999-0451 published?

CVE-1999-0451 was published on 1999-01-19 and last updated on 2026-06-16.

CVE-1999-0451

CVE-1999-0451 is a low-severity vulnerability in Linux Linux Kernel with a CVSS 2.0 base score of 2.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Low (CVSS 2.0 base score 2.1)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Linux Linux Kernel
Published: 1999-01-19
Last modified: 2026-06-16

Description

Denial of service in Linux 2.0.36 allows local users to prevent any server from listening on any non-privileged port.

Frequently asked questions

What is CVE-1999-0451?: Denial of service in Linux 2.0.36 allows local users to prevent any server from listening on any non-privileged port.
How severe is CVE-1999-0451?: CVE-1999-0451 has a CVSS 2.0 base score of 2.1, rated low severity.
Is CVE-1999-0451 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0451?: CVE-1999-0451 primarily affects Linux Linux Kernel. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0451?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-1999-0451 published?: CVE-1999-0451 was published on 1999-01-19 and last updated on 2026-06-16.

References

http://www.securityfocus.com/bid/343

Affected products (2)

cpe:2.3:o:linux:linux_kernel:2.0:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.2.0:*:*:*:*:*:*:*

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