CVE-2009-3459

Adobe — Adobe Acrobat and Reader Heap-Based Buffer Overflow Vulnerability

CISA KEV · in the CISA KEV catalog since 2026-05-20

What EVULNABLE says

EVULNABLE Risk · priority 85/100 Immediate Intelligence coverage 75/90 — no pre-patch disclosure data
Overdue by 3 monthsCISA KEVActively Exploited

Why it matters: Listed in the CISA KEV catalog, and an EPSS probability of 0.866.

Patch Immediately

The priority band answers “how soon”, not “how bad” — see Methodology for what it weighs and where it abstains.

The evidence behind it

Published measurements for CVE-2009-3459
MeasureValueSource
CVSS base score 8.8 NVD
FIRST EPSS 0.866 (99.72nd pctl) FIRST
Actively exploited Confirmed CISA KEV
Ransomware campaign use Unknown or none CISA KEV
CISA remediation deadline 2026-06-03 — Overdue by 3 months CISA KEV
Intelligence coverage 75/90 — no pre-patch disclosure data

What CISA says to do

This page is an opinion about urgency. Where it and a source of record disagree, the source of record is the record.