How severe is CVE-2005-1820?

CVE-2005-1820 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2005-1820 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-1820?

CVE-2005-1820 primarily affects Zeroboard. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2005-1820?

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-2005-1820 published?

CVE-2005-1820 was published on 2005-06-01 and last updated on 2026-06-16.

CVE-2005-1820

CVE-2005-1820 is a high-severity vulnerability in Zeroboard 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: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Zeroboard
Published: 2005-06-01
Last modified: 2026-06-16

Description

zboard.php in Zeroboard version 4.1pl2 to 4.1pl5 allows remote attackers to execute arbitrary PHP code via improper quoting when using the preg_replace function.

Frequently asked questions

What is CVE-2005-1820?: zboard.php in Zeroboard version 4.1pl2 to 4.1pl5 allows remote attackers to execute arbitrary PHP code via improper quoting when using the preg_replace function.
How severe is CVE-2005-1820?: CVE-2005-1820 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2005-1820 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-1820?: CVE-2005-1820 primarily affects Zeroboard. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2005-1820?: 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-2005-1820 published?: CVE-2005-1820 was published on 2005-06-01 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:zeroboard:zeroboard:4.1_pl2:*:*:*:*:*:*:*
cpe:2.3:a:zeroboard:zeroboard:4.1_pl3:*:*:*:*:*:*:*
cpe:2.3:a:zeroboard:zeroboard:4.1_pl4:*:*:*:*:*:*:*
cpe:2.3:a:zeroboard:zeroboard:4.1_pl5:*:*:*:*:*:*:*

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