CVE Feed

    Dashboard / CVE / CVE-2011-0656

    CVE-2011-0656

    Microsoft PowerPoint 2002 SP3, 2003 SP3, 2007 SP2, and 2010; Office 2004, 2008, and 2011 for Mac; Open XML File Format Converter for Mac; Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP2; PowerPoint Viewer; PowerPoint Viewer 2007 SP2; and PowerPoint Web App do not properly validate PersistDirectoryEntry records in PowerPoint documents, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a Slide with a malformed record, which triggers an exception and later use of an unspecified method, aka "Persist Directory RCE Vulnerability."

    Published:Apr 13, 2011
    Last Modified:Apr 11, 2025
    EPS:Apr 13, 2011
    EPSS Score:0.5776
    CVSS Score:9.3

    Affected Products

    Vendor
    Microsoft
    Product
    Office
    Vendor
    Microsoft
    Product
    Office Compatibility Pack
    Vendor
    Microsoft
    Product
    Office Powerpoint Viewer
    Vendor
    Microsoft
    Product
    Open Xml File Format Converter
    Vendor
    Microsoft
    Product
    Powerpoint
    Vendor
    Microsoft
    Product
    Powerpoint Viewer
    Vendor
    Microsoft
    Product
    Powerpoint Web App

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-20 Improper Input Validation

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-10 Buffer Overflow via Environment Variables
    CAPEC-101 Server Side Include (SSI) Injection
    CAPEC-104 Cross Zone Scripting
    CAPEC-108 Command Line Execution through SQL Injection
    CAPEC-109 Object Relational Mapping Injection
    CAPEC-110 SQL Injection through SOAP Parameter Tampering
    CAPEC-120 Double Encoding
    CAPEC-13 Subverting Environment Variable Values
    CAPEC-135 Format String Injection
    CAPEC-136 LDAP Injection
    CAPEC-14 Client-side Injection-induced Buffer Overflow
    CAPEC-153 Input Data Manipulation
    CAPEC-182 Flash Injection
    CAPEC-209 XSS Using MIME Type Mismatch
    CAPEC-22 Exploiting Trust in Client
    CAPEC-23 File Content Injection
    CAPEC-230 Serialized Data with Nested Payloads
    CAPEC-231 Oversized Serialized Data Payloads
    CAPEC-24 Filter Failure through Buffer Overflow
    CAPEC-250 XML Injection
    CAPEC-261 Fuzzing for garnering other adjacent user/sensitive data
    CAPEC-267 Leverage Alternate Encoding
    CAPEC-28 Fuzzing
    CAPEC-3 Using Leading 'Ghost' Character Sequences to Bypass Input Filters
    CAPEC-31 Accessing/Intercepting/Modifying HTTP Cookies
    CAPEC-42 MIME Conversion
    CAPEC-43 Exploiting Multiple Input Interpretation Layers
    CAPEC-45 Buffer Overflow via Symbolic Links
    CAPEC-46 Overflow Variables and Tags
    CAPEC-47 Buffer Overflow via Parameter Expansion
    CAPEC-473 Signature Spoof
    CAPEC-52 Embedding NULL Bytes
    CAPEC-53 Postfix, Null Terminate, and Backslash
    CAPEC-588 DOM-Based XSS
    CAPEC-63 Cross-Site Scripting (XSS)
    CAPEC-64 Using Slashes and URL Encoding Combined to Bypass Validation Logic
    CAPEC-664 Server Side Request Forgery
    CAPEC-67 String Format Overflow in syslog()
    CAPEC-7 Blind SQL Injection
    CAPEC-71 Using Unicode Encoding to Bypass Validation Logic
    CAPEC-72 URL Encoding
    CAPEC-73 User-Controlled Filename
    CAPEC-78 Using Escaped Slashes in Alternate Encoding
    CAPEC-79 Using Slashes in Alternate Encoding
    CAPEC-8 Buffer Overflow in an API Call
    CAPEC-80 Using UTF-8 Encoding to Bypass Validation Logic
    CAPEC-81 Web Server Logs Tampering
    CAPEC-83 XPath Injection
    CAPEC-85 AJAX Footprinting
    CAPEC-88 OS Command Injection
    CAPEC-9 Buffer Overflow in Local Command-Line Utilities

    Related CVEs

    CVE-2026-78439 (CVSS 8.8) — Stack-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code ov…
    CVE-2026-70105 (CVSS 6.5) — Improper input validation in Microsoft Office Word allows an unauthorized attacker to disclose information ove…
    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/71770
    http://www.securityfocus.com/archive/1/517482/100/0/threaded
    http://www.securityfocus.com/bid/47251
    http://www.securitytracker.com/id?1025340
    http://www.us-cert.gov/cas/techalerts/TA11-102A.html
    http://www.vupen.com/english/advisories/2011/0941
    http://www.zerodayinitiative.com/advisories/ZDI-11-125
    https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-022
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11761
    http://osvdb.org/71770
    http://www.securityfocus.com/archive/1/517482/100/0/threaded
    http://www.securityfocus.com/bid/47251
    http://www.securitytracker.com/id?1025340
    http://www.us-cert.gov/cas/techalerts/TA11-102A.html
    http://www.vupen.com/english/advisories/2011/0941
    http://www.zerodayinitiative.com/advisories/ZDI-11-125
    https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-022
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11761

    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