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Critical CVEs

CVE-2009-3459 — Adobe Acrobat and Reader Heap-Based Buffer Overflow Vulnerability

May 20, 2026

Adobe Acrobat and Reader Heap-Based Buffer Overflow Vulnerability

Affected vendor/product: Adobe Acrobat and Reader

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.

CISA KEV date added: 2026-05-20

Due date: 2026-06-03

Known ransomware campaign use: Unknown

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