CVE-2011-1276

Microsoft Excel 2002 SP3, 2003 SP3, 2007 SP2 - Remote Code Execution via Crafted Spreadsheet

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2011-1276. PoCs published by webDEViL.

AI-analyzed exploit summary This PoC exploits a buffer overflow vulnerability in Microsoft Excel by generating a malformed SLK file. The excessive 'P;PAAAA' repetition triggers the overflow, potentially leading to arbitrary code execution when the file is opened.

Description

Buffer overflow in Microsoft Excel 2002 SP3, 2003 SP3, and 2007 SP2; Office 2004 and 2008 for Mac; Open XML File Format Converter for Mac; Excel Viewer SP2; and Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP2 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted Excel spreadsheet, related to improper validation of record information, aka "Excel Buffer Overrun Vulnerability."

Exploits (1)

exploitdb WORKING POC VERIFIED
by webDEViL · perldoswindows
https://www.exploit-db.com/exploits/17643

This PoC exploits a buffer overflow vulnerability in Microsoft Excel by generating a malformed SLK file. The excessive 'P;PAAAA' repetition triggers the overflow, potentially leading to arbitrary code execution when the file is opened.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: Microsoft Excel (versions affected by CVE-2011-1276)
No auth needed
Prerequisites: Victim must open the malformed SLK file in a vulnerable version of Microsoft Excel
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb
http://osvdb.org/72924
Third Party Advisory third-party-advisory x_refsource_sreason
http://securityreason.com/securityalert/8330
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12451

Scores

EPSS 0.5098
EPSS Percentile 97.9%

Details

CWE
CWE-119
Status published
Products (8)
microsoft/excel 2002 sp3
microsoft/excel 2003 sp3
microsoft/excel 2007 sp2
microsoft/excel_viewer
microsoft/office 2004
microsoft/office 2008
microsoft/office_compatibility_pack 2007 sp2
microsoft/open_xml_file_format_converter
Published Jun 16, 2011
Tracked Since Feb 18, 2026