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    CVE-2003-0820

    Microsoft Word 97, 98(J), 2000, and 2002, and Microsoft Works Suites 2001 through 2004, do not properly check the length of the "Macro names" data value, which could allow remote attackers to execute arbitrary code via a buffer overflow attack.

    Published:Nov 18, 2003
    Last Modified:Apr 16, 2026
    EPS:Nov 18, 2003
    EPSS Score:0.17469
    CVSS Score:7.5

    Affected Products

    Vendor
    Microsoft
    Product
    Word
    Vendor
    Microsoft
    Product
    Works

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-83949 (CVSS 5.5) — Buffer over-read in Microsoft Office Word allows an unauthorized attacker to disclose information locally.…
    CVE-2026-83951 (CVSS 5.5) — Buffer over-read in Microsoft Office Word allows an unauthorized attacker to disclose information locally.…
    CVE-2026-80090 (CVSS 6.5) — Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a net…
    CVE-2026-80085 (CVSS 8.8) — Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a net…
    CVE-2026-80080 (CVSS 8.8) — Double free in Microsoft Office Word allows an unauthorized attacker to execute code over a network.…
    CVE-2026-78525 (CVSS 8.8) — Use after free in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.…
    CVE-2026-78520 (CVSS 6.5) — Out-of-bounds read in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.…
    CVE-2026-78522 (CVSS 6.5) — Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a net…
    CVE-2026-78521 (CVSS 8.8) — Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a net…
    CVE-2026-80079 (CVSS 6.5) — Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a net…

    References

    http://archives.neohapsis.com/archives/bugtraq/2003-10/0163.html
    http://www.security.nnov.ru/search/document.asp?docid=5243
    http://www.securityfocus.com/bid/8835
    https://docs.microsoft.com/en-us/security-updates/securitybulletins/2003/ms03-050
    https://exchange.xforce.ibmcloud.com/vulnerabilities/13682
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A336
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A585
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A586
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A668
    http://archives.neohapsis.com/archives/bugtraq/2003-10/0163.html
    http://www.security.nnov.ru/search/document.asp?docid=5243
    http://www.securityfocus.com/bid/8835
    https://docs.microsoft.com/en-us/security-updates/securitybulletins/2003/ms03-050
    https://exchange.xforce.ibmcloud.com/vulnerabilities/13682
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A336
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A585
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A586
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A668

    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