PT-2021-4928 · Adobe · Acrobat Reader

Published

2021-09-14

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Updated

2024-08-13

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CVE-2021-39863

CVSS v3.1

7.8

High

VectorAV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Adobe Acrobat Reader DC versions 2021.005.20060 and earlier Adobe Acrobat Reader DC versions 2020.004.30006 and earlier Adobe Acrobat Reader DC versions 2017.011.30199 and earlier
Description The issue is related to a Buffer Overflow vulnerability when parsing a specially crafted PDF file. 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, where a victim must open a malicious file. The vulnerability is also described as a heap-based buffer overflow, allowing attackers to execute arbitrary code.
Recommendations For Adobe Acrobat Reader DC versions 2021.005.20060 and earlier, update to a version later than 2021.005.20060 to resolve the issue. For Adobe Acrobat Reader DC versions 2020.004.30006 and earlier, update to a version later than 2020.004.30006 to resolve the issue. For Adobe Acrobat Reader DC versions 2017.011.30199 and earlier, update to a version later than 2017.011.30199 to resolve the issue. As a temporary workaround, consider avoiding the use of Adobe Acrobat Reader DC to open PDF files from untrusted sources until a patch is available.

Fix

Heap Based Buffer Overflow

Weakness Enumeration

CWE-122

Related Identifiers

BDU:2021-05666
CVE-2021-39863

Affected Products

Acrobat Reader