#VU56530 Heap-based buffer overflow in Adobe Acrobat and Adobe Reader - CVE-2021-39863
Published: September 14, 2021 / Updated: January 6, 2022
Vulnerability identifier: #VU56530
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2021-39863
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
Adobe Acrobat
Adobe Reader
Adobe Acrobat
Adobe Reader
Software vendor:
Adobe
Adobe
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing PDF files. A remote attacker can trick the victim to open a specially crafted PDF file, trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install updates from vendor's website.