CVE-2021-39840 HIGH

CVE-2021-39840: Adobe Acrobat Reader DC AcroForm Field Use-After-Free Remote Code Execution Vulnerability

Vendor Adobe
Product Acrobat Reader
Weakness CWE-416
Published September 29, 2021
Last update September 16, 2024

CVSS base score

7.8/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a use-after-free vulnerability when processing AcroForms that could result in arbitrary code execution in the context of the current user. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

Key dates

02Disclosure timeline

September 29, 2021 CVE published
September 16, 2024 Record updated