ACTIVELY EXPLOITED3 sources verified·1 min read
By Lyrie Threat Intelligence·5/20/2026
CVE-2009-3459 added to CISA KEV: Adobe Acrobat and Reader
Status: ✅ Confirmed exploited in the wild
Date added: 2026-05-20
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Due date: 2026-06-03
Why this matters
Adobe Acrobat and Reader contain a heap-based buffer overflow vulnerability which could allow remote attackers to execute arbitrary code via a crafted PDF file that triggers memory corruption.
Sources
Lyrie Verdict
Lyrie's autonomous detection layer catches active exploitation primitives at machine speed — closing the gap between disclosure and weaponization that traditional defense simply can't cover.
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