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    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.

    Published:Sep 10, 2002
    Last Modified:Apr 16, 2026
    EPS:Sep 10, 2002
    EPSS Score:0.17339
    CVSS Score:6.8

    Affected Products

    Vendor
    Apple
    Product
    Macos
    Vendor
    Microsoft
    Product
    Internet Explorer
    Vendor
    Microsoft
    Product
    Office
    Vendor
    Microsoft
    Product
    Outlook Express
    Vendor
    Microsoft
    Product
    Windows 2000
    Vendor
    Microsoft
    Product
    Windows 98
    Vendor
    Microsoft
    Product
    Windows 98se
    Vendor
    Microsoft
    Product
    Windows Me
    Vendor
    Microsoft
    Product
    Windows Nt
    Vendor
    Microsoft
    Product
    Windows Xp

    Exploits

    https://www.exploit-db.com/exploits/21692

    Common Weakness Enumeration

    CWE-295 Improper Certificate Validation

    Related CVEs

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    CVE-2026-87637 (CVSS 9.6) — Use after free in Extensions in Google Chrome on on Mac prior to 153.0.8010.36 allowed a remote attacker to ex…
    CVE-2026-87535 (CVSS 6.5) — Information loss or omission in Safebrowsing in Google Chrome on on Mac prior to 153.0.8010.36 allowed a remot…
    CVE-2026-87452 (CVSS 3.1) — Incorrect authorization in GPU in Google Chrome on on Mac prior to 153.0.8010.36 allowed a remote attacker who…
    CVE-2026-87562 (CVSS 4.3) — Incorrect reference resolution in Accessibility in Google Chrome on on Mac prior to 153.0.8010.36 allowed a re…
    CVE-2026-87558 (CVSS 9.6) — Use after free in Payments in Google Chrome on on Mac prior to 153.0.8010.36 allowed a remote attacker to exec…
    CVE-2026-87607 (CVSS 9.6) — Use after free in Device in Google Chrome on on Mac prior to 153.0.8010.36 allowed a remote attacker to potent…
    CVE-2026-81984 (CVSS 5.5) — Acrobat Reader is affected by a Use After Free vulnerability that could lead to disclosure of sensitive memory…
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    References

    http://marc.info/?l=bugtraq&m=102866120821995&w=2
    http://marc.info/?l=bugtraq&m=102918200405308&w=2
    http://marc.info/?l=bugtraq&m=102976967730450&w=2
    https://docs.microsoft.com/en-us/security-updates/securitybulletins/2002/ms02-050
    https://exchange.xforce.ibmcloud.com/vulnerabilities/9776
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1056
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1332
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2671
    http://marc.info/?l=bugtraq&m=102866120821995&w=2
    http://marc.info/?l=bugtraq&m=102918200405308&w=2
    http://marc.info/?l=bugtraq&m=102976967730450&w=2
    https://docs.microsoft.com/en-us/security-updates/securitybulletins/2002/ms02-050
    https://exchange.xforce.ibmcloud.com/vulnerabilities/9776
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1056
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1332
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2671

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High