How severe is CVE-2008-4023?

CVE-2008-4023 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2008-4023 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 39% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-4023?

CVE-2008-4023 affects Microsoft Windows 2000. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2008-4023?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2008-4023 published?

CVE-2008-4023 was published on 2008-10-15 and last updated on 2026-06-16.

CVE-2008-4023

CVE-2008-4023 is a critical-severity vulnerability in Microsoft Windows 2000 with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 39% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-399.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 39% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Microsoft Windows 2000
Published: 2008-10-15
Last modified: 2026-06-16

Description

Active Directory in Microsoft Windows 2000 SP4 does not properly allocate memory for (1) LDAP and (2) LDAPS requests, which allows remote attackers to execute arbitrary code via a crafted request, aka "Active Directory Overflow Vulnerability."

Frequently asked questions

What is CVE-2008-4023?: Active Directory in Microsoft Windows 2000 SP4 does not properly allocate memory for (1) LDAP and (2) LDAPS requests, which allows remote attackers to execute arbitrary code via a crafted request, aka "Active Directory Overflow Vulnerability."
How severe is CVE-2008-4023?: CVE-2008-4023 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2008-4023 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 39% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-4023?: CVE-2008-4023 affects Microsoft Windows 2000. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2008-4023?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2008-4023 published?: CVE-2008-4023 was published on 2008-10-15 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:microsoft:windows_2000:*:sp4:*:*:*:*:*:*

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