CVE-2009-3459
Adobe Acrobat and Reader Heap-Based Buffer Overflow Vulnerability
- High 8.8
- Exploited: added to CISA KEV 20 May 2026
Description
Heap-based buffer overflow in Adobe Reader and Acrobat 7.x before 7.1.4, 8.x before 8.1.7, and 9.x before 9.2 allows remote attackers to execute arbitrary code via a crafted PDF file that triggers memory corruption, as exploited in the wild in October 2009. NOTE: some of these details are obtained from third party information.
Key facts
- Published
- 13 Oct 2009
- Last changed
- 21 May 2026
- Assigned by
- adobe
- KEV added
- 20 May 2026
- KEV fix due
- 3 Jun 2026
- EPSS
- 86.531% likely to be exploited in the next 30 days, higher than 99.743% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: no; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 8.8CVSS 3.1, Highfrom CISA (ADP container)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
What to do
- 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 required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a |
|
Timeline
- 13 Oct 2009 Published
- 20 May 2026 CVE-2009-3459 added to CISA KEV
- 20 May 2026 Added to the CISA KEV catalogue