Use-after-free in Adobe Reader and Adobe Acrobat - CVE-2021-40728

 

Use-after-free in Adobe Reader and Adobe Acrobat - CVE-2021-40728

Published: October 12, 2021


Vulnerability identifier: #VU57297
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-2021-40728
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing PDF files. A remote attacker can create a specially crafted PDF file, trick the victim into opening it, trigger a use-after-free error and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.


Affected software

Adobe Reader
Adobe Acrobat

How to mitigate CVE-2021-40728

Install updates from vendor's website.

Adobe Reader - addressed in versions 17.011.30204, 20.004.30017, 21.007.20099
Adobe Acrobat - addressed in versions 21.007.20099, 17.011.30204, 20.004.30017

External References

Related Security Bulletins