CVE-2009-0557: Microsoft Office Object Record Corruption Vulnerability

Vulnerability summary

CVE-2009-0557 is a high (CVSS 9.3) Code Injection vulnerability in Microsoft Office. It is known to be exploited: CISA lists it, first on 08-06-2022. EPSS estimates a 53.00% chance of exploitation in the next 30 days, higher than 98.9% of scored vulnerabilities.

Timeline

1. 10-06-2009
   PublishedVulnerability first disclosed.
2. 08-06-2022
   Added to CISA KEVMicrosoft Office Object Record Corruption Vulnerability
3. 22-06-2022
   CISA remediation dueApply updates per vendor instructions.
4. 22-10-2025
   Last modifiedVulnerability information updated.

Description

Excel in Microsoft Office 2000 SP3, Office XP SP3, Office 2003 SP3, and Office 2004 and 2008 for Mac; Excel in 2007 Microsoft Office System SP1 and SP2; Open XML File Format Converter for Mac; Microsoft Office Excel Viewer 2003 SP3; Microsoft Office Excel Viewer; and Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP1 and SP2 allow remote attackers to execute arbitrary code via a crafted Excel file with a malformed record object, aka "Object Record Corruption Vulnerability."

• CWE-94Improper Control of Generation of Code ('Code Injection')The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.