CVE-2011-0656: microsoft office Improper Input Validation
Vulnerability summary
CVE-2011-0656 is a high (CVSS 9.3) Improper Input Validation vulnerability in microsoft office. EPSS estimates a 29.60% chance of exploitation in the next 30 days, higher than 98.1% of scored vulnerabilities.
Timeline
- 13-04-2011PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
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."
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
29.60%
Chance of exploitation in the next 30 days
Percentile
98%
Versus all other CVEs
30-day change
0.00 pp
From 29.60% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Microsoft4 products
- office2004 | 2008 | 2011
- office_compatibility_pack2007:sp2
- powerpoint2002:sp3 | 2003:sp3 | 2007:sp2 | 2010
- powerpoint_viewer2007:sp2
1 vendor · 4 products
References
9 links- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11761VDB EntrySignatureX Refsource OVAL
docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-022Vendor AdvisoryX Refsource MS- www.us-cert.gov/cas/techalerts/TA11-102A.htmlThird Party AdvisoryX Refsource CERTUS Government Resource
- www.zerodayinitiative.com/advisories/ZDI-11-125X Refsource MISC