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UK Cyber Defence
VulnerabilityAnalyzed

CVE-2009-3459

Adobe Acrobat and Reader Heap-Based Buffer Overflow Vulnerability

KEVEXPLOIT ×2 ✓HIGH 8.8EPSS 86.6%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 3 June 2026). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

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.

CVSS 3.1
8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
86.65% probability · 100th percentile
Public exploits
2 in Exploit-DB · verified · first 20 September 2010
CISA KEV
Listed 20 May 2026 · due 3 June 2026
Weakness
CWE-119, CWE-122
Affected
adobe/acrobat · adobe/acrobat reader
Source
psirt@adobe.com
EPSS trend
0%45%90%27 October 2026: 86.65%27 October 202627 October 2026

EPSS 86.6% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

CISA notes

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://www.cisa.gov/news-events/alerts/2009/10/13/adobe-reader-and-acrobat-vulnerabilities ; https://web.archive.org/web/20120324170253/http://www.adobe.com/support/security/bulletins/apsb09-15.html#:~:text=CVE%2D2009%2D3459).-,NOTE%3A,-There%20are%20reports ; https://nvd.nist.gov/vuln/detail/CVE-2009-3459

Public exploits (2)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-16652source ↗Adobe - FlateDecode Stream Predictor 02 Integer Overflow (Metasploit) (2)windows · Metasploitlocal25 September 2010yes
EDB-16546source ↗Adobe - FlateDecode Stream Predictor 02 Integer Overflow (Metasploit) (1)windows · Metasploitlocal20 September 2010yes

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.