How severe is CVE-2000-0456?

CVE-2000-0456 has a CVSS 2.0 base score of 2.1, rated low severity.

Is CVE-2000-0456 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2000-0456?

CVE-2000-0456 primarily affects Netbsd. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2000-0456?

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

When was CVE-2000-0456 published?

CVE-2000-0456 was published on 2000-05-28 and last updated on 2026-06-16.

CVE-2000-0456

CVE-2000-0456 is a low-severity vulnerability in Netbsd 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: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Netbsd
Published: 2000-05-28
Last modified: 2026-06-16

Description

NetBSD 1.4.2 and earlier allows local users to cause a denial of service by repeatedly running certain system calls in the kernel which do not yield the CPU, aka "cpu-hog".

Frequently asked questions

What is CVE-2000-0456?: NetBSD 1.4.2 and earlier allows local users to cause a denial of service by repeatedly running certain system calls in the kernel which do not yield the CPU, aka "cpu-hog".
How severe is CVE-2000-0456?: CVE-2000-0456 has a CVSS 2.0 base score of 2.1, rated low severity.
Is CVE-2000-0456 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-0456?: CVE-2000-0456 primarily affects Netbsd. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2000-0456?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2000-0456 published?: CVE-2000-0456 was published on 2000-05-28 and last updated on 2026-06-16.

References

Affected products (8)

cpe:2.3:o:netbsd:netbsd:1.4.1:*:alpha:*:*:*:*:*
cpe:2.3:o:netbsd:netbsd:1.4.1:*:arm32:*:*:*:*:*
cpe:2.3:o:netbsd:netbsd:1.4.1:*:sparc:*:*:*:*:*
cpe:2.3:o:netbsd:netbsd:1.4.1:*:x86:*:*:*:*:*
cpe:2.3:o:netbsd:netbsd:1.4.2:*:alpha:*:*:*:*:*
cpe:2.3:o:netbsd:netbsd:1.4.2:*:arm32:*:*:*:*:*
cpe:2.3:o:netbsd:netbsd:1.4.2:*:sparc:*:*:*:*:*
cpe:2.3:o:netbsd:netbsd:1.4.2:*:x86:*:*:*:*:*

More vulnerabilities in Netbsd

CVE-2006-4304 — Critical (CVSS 10.0): Buffer overflow in the sppp driver in FreeBSD 4.11 through 6.1, NetBSD 2.0 through 4.0 beta before 20060823, and…
CVE-2003-0694 — Critical (CVSS 10.0): The prescan function in Sendmail 8.12.9 allows remote attackers to execute arbitrary code via buffer overflow attacks,…
CVE-2002-1337 — Critical (CVSS 10.0): Buffer overflow in Sendmail 5.79 to 8.12.7 allows remote attackers to execute arbitrary code via certain formatted…
CVE-2001-0554 — Critical (CVSS 10.0): Buffer overflow in BSD-based telnetd telnet daemon on various operating systems allows remote attackers to execute…
CVE-2001-0247 — Critical (CVSS 10.0): Buffer overflows in BSD-based FTP servers allows remote attackers to execute arbitrary commands via a long pattern…
CVE-2001-0053 — Critical (CVSS 10.0): One-byte buffer overflow in replydirname function in BSD-based ftpd allows remote attackers to gain root privileges.

All CVEs affecting Netbsd →