VULNERABILITY INTELLIGENCE

CVE-2021-21017

CVSS score8.8 HIGH

EPSS probability86.33%

CISA KEVKnown exploited vulnerability

Published2021-02-11

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Known Exploited Vulnerability

Adobe Acrobat and Reader Heap-based Buffer Overflow Vulnerability

Vendor / product: Adobe / Acrobat and Reader

Description

Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by a heap-based buffer overflow vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Weakness classification

psirt@adobe.com: CWE-122
nvd@nist.gov: CWE-787

Primary references

psirt@adobe.com — Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0 — Third Party Advisory, US Government Resource