How severe is CVE-2002-0862?

CVE-2002-0862 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2002-0862 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-2002-0862?

CVE-2002-0862 primarily affects Microsoft Internet Explorer. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2002-0862?

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

When was CVE-2002-0862 published?

CVE-2002-0862 was published on 2002-10-04 and last updated on 2026-06-16.

CVE-2002-0862

CVE-2002-0862 is a medium-severity vulnerability in Microsoft Internet Explorer with a CVSS 2.0 base score of 6.8. Its EPSS exploit-prediction score of 19% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-295.

Key facts

Severity: Medium (CVSS 2.0 base score 6.8)
EPSS exploit prediction: 19% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Microsoft Internet Explorer
Published: 2002-10-04
Last modified: 2026-06-16

Description

The (1) CertGetCertificateChain, (2) CertVerifyCertificateChainPolicy, and (3) WinVerifyTrust APIs within the CryptoAPI for Microsoft products including Microsoft Windows 98 through XP, Office for Mac, Internet Explorer for Mac, and Outlook Express for Mac, do not properly verify the Basic Constraints of intermediate CA-signed X.509 certificates, which allows remote attackers to spoof the certificates of trusted sites via a man-in-the-middle attack for SSL sessions, as originally reported for Internet Explorer and IIS.

Frequently asked questions

What is CVE-2002-0862?: The (1) CertGetCertificateChain, (2) CertVerifyCertificateChainPolicy, and (3) WinVerifyTrust APIs within the CryptoAPI for Microsoft products including Microsoft Windows 98 through XP, Office for Mac, Internet Explorer for Mac, and Outlook Express for Mac, do not properly verify the Basic Constraints of intermediate CA-signed X.509 certificates, which allows remote attackers to spoof the certificates of trusted sites via a man-in-the-middle attack for SSL sessions, as originally reported for Internet Explorer and IIS.
How severe is CVE-2002-0862?: CVE-2002-0862 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2002-0862 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-2002-0862?: CVE-2002-0862 primarily affects Microsoft Internet Explorer. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2002-0862?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2002-0862 published?: CVE-2002-0862 was published on 2002-10-04 and last updated on 2026-06-16.

References

Affected products (10)

cpe:2.3:o:microsoft:windows_2000:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_98:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_98se:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_me:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:-:*:*:-:*:*:*
cpe:2.3:o:microsoft:windows_nt:4.0:-:*:*:terminal_server:*:*:*
cpe:2.3:o:microsoft:windows_xp:-:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:internet_explorer:-:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:office:-:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:outlook_express:-:*:*:*:*:*:*:*

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