CVE-2021-21017
Adobe Acrobat and Reader Heap-based Buffer Overflow Vulnerability
CVSS
—
No CVSS
EPSS
86.3%
p100
KEV
YES
Nov 3, 2021
Exploit Today
80
0-100
Published: — · Last modified: —
86.3%EPSS · 30 days86.3%
2026-09-172026-10-15
Product
Adobe / Acrobat and Reader
Vulnerability
Adobe Acrobat and Reader Heap-based Buffer Overflow Vulnerability
Added to KEV
Nov 3, 2021
Remediate by
Nov 17, 2021
Known ransomware use
No
Summary 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.
Required action
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-21017
CVECVSSEPSSKEVRExploitTitleMod.
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