Out-of-bounds read in Adobe Reader and Adobe Acrobat - CVE-2021-28557
Published: May 11, 2021
Vulnerability identifier: #VU53131
CSH Severity: High
CVSS v4: 8.4 [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]
CVE-ID: CVE-2021-28557
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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 create a specially crafted PDF document, trick the victim into opening it, trigger an out-of-bounds read and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.Affected software
Adobe Reader
Adobe Acrobat
Adobe Acrobat
How to mitigate CVE-2021-28557
Install updates from vendor's website.
Adobe Reader - addressed in versions 17.011.30196, 20.001.30025, 21.001.20155
Adobe Acrobat - addressed in versions 17.011.30196, 20.001.30025, 21.001.20155
Adobe Acrobat - addressed in versions 17.011.30196, 20.001.30025, 21.001.20155