How severe is CVE-2000-0426?

CVE-2000-0426 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2000-0426 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2000-0426?

CVE-2000-0426 affects Ultrascripts Ultraboard. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2000-0426?

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

When was CVE-2000-0426 published?

CVE-2000-0426 was published on 2000-05-05 and last updated on 2026-06-16.

CVE-2000-0426

CVE-2000-0426 is a medium-severity vulnerability in Ultrascripts Ultraboard with a CVSS 2.0 base score of 5.0. 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 5.0)
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ultrascripts Ultraboard
Published: 2000-05-05
Last modified: 2026-06-16

Description

UltraBoard 1.6 and other versions allow remote attackers to cause a denial of service by referencing UltraBoard in the Session parameter, which causes UltraBoard to fork copies of itself.

Frequently asked questions

What is CVE-2000-0426?: UltraBoard 1.6 and other versions allow remote attackers to cause a denial of service by referencing UltraBoard in the Session parameter, which causes UltraBoard to fork copies of itself.
How severe is CVE-2000-0426?: CVE-2000-0426 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2000-0426 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-0426?: CVE-2000-0426 affects Ultrascripts Ultraboard. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2000-0426?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2000-0426 published?: CVE-2000-0426 was published on 2000-05-05 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:ultrascripts:ultraboard:1.6:*:*:*:*:*:*:*

More vulnerabilities in Ultrascripts Ultraboard

CVE-2000-0332 — Medium (CVSS 5.0): UltraBoard.pl or UltraBoard.cgi CGI scripts in UltraBoard 1.6 allows remote attackers to read arbitrary files via a…
CVE-2001-0135 — Low (CVSS 2.1): The default installation of Ultraboard 2000 2.11 creates the Skins, Database, and Backups directories with…

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