Type confusion in Adobe Reader and Adobe Acrobat - CVE-2021-35986
Published: July 13, 2021 / Updated: October 13, 2021
Vulnerability identifier: #VU54698
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-2021-35986
CWE-ID: CWE-843
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise the affected system
The vulnerability exists due to a boundary condition within the getAnnots method when processing PDF files. A remote attacker can trick the victim to open a specially crafted PDF document, trigger a type confusion error and execute arbitrary code on the system.
Affected software
Adobe Reader
Adobe Acrobat
Adobe Acrobat
How to mitigate CVE-2021-35986
Install updates from vendor's website.
Adobe Reader - addressed in versions 17.011.30199, 20.004.30006, 21.005.20058
Adobe Acrobat - addressed in versions 17.011.30199, 20.004.30006, 21.005.20058
Adobe Acrobat - addressed in versions 17.011.30199, 20.004.30006, 21.005.20058