CVE-2009-0557highunder attackCWE-94

CVE-2009-0557

Published · Updated

Follow this CVE+ Monitor Microsoft Office

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

63Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA.

ssvc Actcvss 7.8epss 53%
from disclosure to weapon
Published on NVDJun 10
CISA KEV+4746d
Action required by CISAfederal deadline: 2022-06-22

Apply updates per vendor instructions.

In short

A flaw in Microsoft Excel allows attackers to run malicious code on a computer by sending a specially crafted Excel file with a corrupted object record. When a victim opens the file, the attacker's code can execute without permission.

Technical detail

This vulnerability exploits improper handling of malformed object records in Excel files (CWE-94: Improper Control of Generation of Code), allowing remote code execution via a crafted spreadsheet. The attack vector is file-based; the precondition requires user interaction to open the malicious Excel file. The impact is arbitrary code execution with the privileges of the user opening the file.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

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."
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
n/a · n/a