CVE-2009-3459: Adobe Acrobat and Reader Heap-Based Buffer Overflow Vulnerability
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
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.
CSIRTS triage
- What
- Adobe Acrobat and Reader contain a heap-based buffer overflow vulnerability that could allow remote attackers to execute arbitrary code via a crafted PDF file.
- Who is affected
- Users of Adobe Acrobat and Reader are affected.
- Urgency
- Remediation is urgent due to the critical nature of the vulnerability and its exploitation status.
- Action
- Users should apply the latest patches provided by Adobe.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2009-3459
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Exploitation confirmedCVE-2009-3459Already exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 100% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2009-3459 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Adobe Acrobat and
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- unknownSecurity Alert: Alert Regarding Vulnerabilities in Adobe Acrobat and Reader (APSB26-63)jpcert · 2026-06-10
- unknownSecurity Alert: Alert Regarding Vulnerabilities in Adobe Acrobat and Reader (APSB26-44)jpcert · 2026-04-15
- criticalexploitedCVE-2026-34621: Adobe Acrobat and Reader Prototype Pollution Vulnerabilitycisa-kev · 2026-04-13
- criticalexploitedCVE-2020-9715: Adobe Acrobat Use-After-Free Vulnerabilitycisa-kev · 2026-04-13
- criticalexploitedCVE-2023-21608: Adobe Acrobat and Reader Use-After-Free Vulnerabilitycisa-kev · 2023-10-10
- criticalexploitedCVE-2023-26369: Adobe Acrobat and Reader Out-of-Bounds Write Vulnerabilitycisa-kev · 2023-09-14
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