CISA KEV · Known exploitedHigh

CVE-2009-3459

Adobe Acrobat and Reader

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.

CVSS
8.8
EPSS
86.6%
99.7% percentile
CISA KEV
Listed
Published
2009.10.13
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability86.6%
Technical severityCVSS 8.8

Vulnerability overview

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.

Affected product and versions

Product
Adobe Acrobat and Reader
Affected versions
>= 7.0 < 7.1.4, >= 8.0 < 8.1.7, >= 9.0 < 9.2
Fixed versions
7.1.4, 8.1.7, 9.2

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
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.

Due date: 2026.06.03
  1. 1
    Identify

    Confirm that Adobe Acrobat and Reader and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
CWE-119, CWE-122
KEV added
2026.05.20
Ransomware use
미확인
CVE-2009-3459 — Adobe Acrobat and Reader | SECUFOCUS NOW