VULNERABILITY INTELLIGENCE

CVE-2021-28550

CVSS score8.8 HIGH

EPSS probability51.85%

CISA KEVKnown exploited vulnerability

Published2021-09-02

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 Use-After-Free Vulnerability

Vendor / product: Adobe / Acrobat and Reader

Description

Acrobat Reader DC versions versions 2021.001.20150 (and earlier), 2020.001.30020 (and earlier) and 2017.011.30194 (and earlier) are affected by a Use After Free 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-416

Primary references

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