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Weekly Signal
Live intelligence Updated 19 Aug 2026 · 20:27 UTC

Adobe · Acrobat, Acrobat and Reader, Acrobat Reader

CVE-2009-3459

Adobe Acrobat and Reader Heap-Based Buffer Overflow Vulnerability

Recommended action

Validate affected assets and exposure now, then remediate on an accelerated schedule. Adobe Security patch APSB09-15

View response plan
CVSS8.8
EPSS86.6%
KEVYes
ExploitationConfirmed exploitation
RemediationExplicit patch identified ↓

Assessment

Why it matters

CISA lists this vulnerability as known to be exploited; exploitation is confirmed; EPSS is 86.6%; technical severity is CVSS 8.8.

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.

Who should care

  • Teams operating Acrobat, Acrobat and Reader, Acrobat Reader
  • Vulnerability and exposure management teams
  • Security operations teams monitoring exploitation activity

Response plan

What I would do

  1. Confirm whether Acrobat, Acrobat and Reader, Acrobat Reader is present in the environment.
  2. Identify affected versions and establish whether vulnerable services are exposed or reachable.
  3. Adobe Security patch APSB09-15
  4. Review relevant security telemetry for evidence of attempted or successful exploitation.
  5. Document the remediation decision and track it to verified completion.

Treatment intelligence

Remediation intelligence

Not yet verified

Vendor sources are listed before government and third-party guidance. Confirm product applicability and change prerequisites before deployment.

Verification noteAutomated link verification has not completed for this guidance yet.

Technical details

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
CWE-119
Affected versions
Adobe Acrobat (Start Including 7.0, End Excluding 7.1.4 | Start Including 8.0, End Excluding 8.1.7 | Start Including 9.0, End Excluding 9.2); Adobe Acrobat and Reader; Adobe Acrobat Reader (Start Including 7.0, End Excluding 7.1.4 | Start Including 8.0, End Excluding 8.1.7 | Start Including 9.0, End Excluding 9.2)
Fixed versions
Adobe Acrobat (Fixed from 7.1.4, 8.1.7, 9.2); Adobe Acrobat Reader (Fixed from 7.1.4, 8.1.7, 9.2)
Published
13 October 2009
Attack vector
Network
Privileges required
None
User interaction
Required

Signal timeline

  1. CVE published
  2. Added to CISA KEV
  3. Latest EPSS score: 86.6%
  4. Signal calculated at 82

External references

Live public intelligence This assessment combines public-source evidence. Validate the affected product, version and exposure against your own environment before making a risk decision.