How severe is CVE-2002-1183?

CVE-2002-1183 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2002-1183 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 19% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2002-1183?

CVE-2002-1183 primarily affects Microsoft Windows 98. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2002-1183?

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-2002-1183 published?

CVE-2002-1183 was published on 2002-12-11 and last updated on 2026-06-16.

CVE-2002-1183

CVE-2002-1183 is a high-severity vulnerability in Microsoft Windows 98 with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 19% places it in the 97th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 19% (97th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Windows 98
Published: 2002-12-11
Last modified: 2026-06-16

Description

Microsoft Windows 98 and Windows NT 4.0 do not properly verify the Basic Constraints of digital certificates, allowing remote attackers to execute code, aka "New Variant of Certificate Validation Flaw Could Enable Identity Spoofing" (CAN-2002-0862).

Frequently asked questions

What is CVE-2002-1183?: Microsoft Windows 98 and Windows NT 4.0 do not properly verify the Basic Constraints of digital certificates, allowing remote attackers to execute code, aka "New Variant of Certificate Validation Flaw Could Enable Identity Spoofing" (CAN-2002-0862).
How severe is CVE-2002-1183?: CVE-2002-1183 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2002-1183 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 19% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2002-1183?: CVE-2002-1183 primarily affects Microsoft Windows 98. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2002-1183?: 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-2002-1183 published?: CVE-2002-1183 was published on 2002-12-11 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:o:microsoft:windows_98:*:gold:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_98se:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:*:*:*:*:*:*:*

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