Microsoft Excel Featheader Record Memory Corruption Vulnerability

Microsoft Office Excel allows remote attackers to execute arbitrary code via a spreadsheet with a FEATHEADER record containing an invalid cbHdrData size element that affects a pointer offset.

cat cve-2009-3129.json

Vendor: Microsoft
Product: Excel
CVSS: 7.8
EPSS (exploit probability): 85.7%
Status: kev
CISA patch-by (BOD 22-01): March 24, 2022
Published: March 3, 2022
Source: https://nvd.nist.gov/vuln/detail/CVE-2009-3129

Microsoft Office Excel allows remote attackers to execute arbitrary code via a spreadsheet with a FEATHEADER record containing an invalid cbHdrData size element that affects a pointer offset.

Added to CISA’s Known Exploited Vulnerabilities catalog on 2022-03-03. Required action per CISA: Apply updates per vendor instructions. Due date: 2022-03-24.

This is an auto-synced KEV catalog record pending a full 0dayNews write-up — see CISA’s KEV catalog and the NVD record linked above for primary sources.