Security readout for executives and security teams
This is an old but serious Adobe Reader and Acrobat flaw. A malicious PDF could corrupt memory and run attacker-controlled code after a user opens it. The source bundle says it was exploited in the wild in October 2009 and CISA KEV lists it as known exploited. Exposure is most likely on legacy endpoints, terminal servers, kiosks, or archived images still running affected Adobe Reader or Acrobat versions. Normal document workflows increase risk because exploitation requires a user to open a crafted PDF. Treat this as a legacy exposure cleanup item with high urgency where old Adobe software remains. The main business risk is user-triggered compromise from routine PDF handling, especially on systems with sensitive data or broad network access. Mitigation focus: Upgrade Adobe Reader or Acrobat beyond the affected versions named by Adobe guidance.; Remove unsupported legacy Adobe Reader or Acrobat from managed endpoints.; Prioritize systems that process external PDFs or shared document repositories..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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CWE-122: Exact CWE lookup
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Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2009-3459 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H2.85.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- Added to KEVCISA-ADP
CISA Known Exploited Vulnerabilities metadata lists this CVE as known exploited.
- ADP timelineCISA-ADP
CVE-2009-3459 added to CISA KEV
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
- 2026-05-20T00:00:00.000Z: CVE-2009-3459 added to CISA KEV
Source materials
- CVE List V5 sourceCVE List V5
- oval:org.mitre.oval:def:6534CVE reference, adobe · vdb-entry, signature
- adobe-reader-pdf-code-execution(53691)CVE reference, adobe · vdb-entry, x_refsource_XF
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-3459CVE reference, CISA-ADP · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Heap-based Buffer Overflow
Heap-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.