CVE-2009-3459
Actively exploited. CVE-2009-3459 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-05-20) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
Public exploit code is available. Proof-of-concept or working exploit code for CVE-2009-3459 is indexed in Metasploit and Exploit-DB. Expect opportunistic scanning and exploitation attempts — prioritize remediation.
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.
CSIRTS triage
- What
- Adobe Acrobat and Reader contain a heap-based buffer overflow vulnerability that could allow remote attackers to execute arbitrary code via a crafted PDF file.
- Who is affected
- Users of Adobe Acrobat and Reader are affected.
- Urgency
- Remediation is urgent due to the critical nature of the vulnerability and its exploitation status.
- Action
- Users should apply the latest patches provided by Adobe.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 100% of all EPSS-scored CVEs.
Exploit availability
Public exploit or proof-of-concept code for CVE-2009-3459 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.
- MetasploitA Metasploit Framework module targets this CVE — weaponized, point-and-click exploitation.look it up ↗
- Exploit-DBA public exploit is published in the Exploit-DB archive.look it up ↗
Advisory coverage (1)
- criticalexploitedCVE-2009-3459: Adobe Acrobat and Reader Heap-Based Buffer Overflow Vulnerabilitycisa-kev · 2026-05-20
External references
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[](https://www.csirts.com/cve/CVE-2009-3459)