CVE-2009-3459VulnerabilityPublished 05/20/2026Updated 10/24/2026
CVE-2009-3459: Adobe Acrobat and Reader Heap-Based Buffer Overflow Vulnerability
Affects Adobe Acrobat and ReaderSource CISA KEV
Severity
HighNo CVSS score published yet
- Exploitation
Actively exploited – in CISA KEV since 05/20/2026
- KEV deadline
- 06/03/2026
- EPSS
- 86.6% chance of exploitation in 30 days – higher than 99% of CVEs
What to do
CISA 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.
Description
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.
Weaknesses
References
- cisa.gov/news-events/alerts/2009/10/13/adobe-reader-and-acrobat-vulnerabilities (opens in a new tab)
- web.archive.org/web/20120324170253/http://www.adobe.com/support/security/bulletins/apsb09-15.html (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2009-3459 (opens in a new tab)
- cisa.gov/known-exploited-vulnerabilities-catalog?search=CVE-2009-3459 (opens in a new tab)