CVE-2021-21017CISA KEVEPSS p99.7%

CVE-2021-21017Adobe Acrobat and Reader Heap-based Buffer Overflow Vulnerability

Adobe / Acrobat and Reader

Description

Acrobat Acrobat and Reader contain a heap-based buffer overflow vulnerability that could allow an unauthenticated attacker to achieve code execution in the context of the current user.

Scoring

EPSS86.27% probability of exploitation · percentile 99.7% · 2026-06-15T12:03:41Z

CISA KEV entry

Added to KEV: 2021-11-03

(incoming)1

TypeTargetConfidenceTier
KEVEntryAdobe Acrobat and Reader Heap-based Buffer Overflow Vulnerabilitykev-cve-2021-210170%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
Adobe Acrobat and Reader Use-After-Free Vulnerability
CVE
CVE-2026-47952
CVE
Adobe Acrobat and Reader Out-of-Bounds Write Vulnerability
CVE
Adobe Acrobat Use-After-Free Vulnerability
CVE
Adobe Reader and Adobe Acrobat Stack-Based Buffer Overflow Vulnerability
CVE
CVE-2026-47959
Sourced from NVD + CISA KEV + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.