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    CVE-2009-0558

    Array index error in Excel in Microsoft Office 2000 SP3 and Office 2004 and 2008 for Mac, and Open XML File Format Converter for Mac, allows remote attackers to execute arbitrary code via a crafted Excel file with a malformed record object, aka "Array Indexing Memory Corruption Vulnerability."

    Published:Jun 10, 2009
    Last Modified:Apr 23, 2026
    EPS:Jun 10, 2009
    EPSS Score:0.53752
    CVSS Score:9.3

    Affected Products

    Vendor
    Microsoft
    Product
    Office
    Vendor
    Microsoft
    Product
    Office Compatibility Pack For Word Excel Ppt 2007
    Vendor
    Microsoft
    Product
    Office Excel
    Vendor
    Microsoft
    Product
    Office Excel Viewer
    Vendor
    Microsoft
    Product
    Office Sharepoint Server
    Vendor
    Microsoft
    Product
    Open Xml File Format Converter

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-50387 (CVSS 7.8) — Stack-based buffer overflow in Windows GDI allows an authorized attacker to elevate privileges locally.…
    CVE-2026-45463 (CVSS 8.4) — Integer underflow (wrap or wraparound) in Microsoft Office allows an unauthorized attacker to execute code loc…
    CVE-2026-45461 (CVSS 8.4) — Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.…
    CVE-2026-45460 (CVSS 4.7) — Buffer over-read in Microsoft Office allows an unauthorized attacker to disclose information locally.…
    CVE-2026-45474 (CVSS 8.4) — Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.…
    CVE-2026-45472 (CVSS 8.4) — Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.…
    CVE-2026-42832 (CVSS 7.7) — Improper access control in Microsoft Office allows an unauthorized attacker to perform spoofing locally.…
    CVE-2026-40420 (CVSS 8.8) — Use after free in Microsoft Office allows an authorized attacker to elevate privileges locally.…

    References

    http://osvdb.org/54954
    http://secunia.com/secunia_research/2009-1/
    http://www.securityfocus.com/archive/1/504188/100/0/threaded
    http://www.securityfocus.com/bid/35242
    http://www.securitytracker.com/id?1022351
    http://www.us-cert.gov/cas/techalerts/TA09-160A.html
    http://www.vupen.com/english/advisories/2009/1540
    https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-021
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11525
    http://osvdb.org/54954
    http://secunia.com/secunia_research/2009-1/
    http://www.securityfocus.com/archive/1/504188/100/0/threaded
    http://www.securityfocus.com/bid/35242
    http://www.securitytracker.com/id?1022351
    http://www.us-cert.gov/cas/techalerts/TA09-160A.html
    http://www.vupen.com/english/advisories/2009/1540
    https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-021
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11525

    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