ACTIVELY EXPLOITED3 sources verified·1 min read
By Lyrie Threat Intelligence·3/3/2022
CVE-2009-3129 added to CISA KEV: Microsoft Excel
Status: ✅ Confirmed exploited in the wild
Date added: 2022-03-03
Required action: Apply updates per vendor instructions.
Due date: 2022-03-24
Why this matters
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.
Sources
Lyrie Verdict
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