NULL pointer dereference in Adobe Reader and Adobe Acrobat - CVE-2021-21057
Published: February 9, 2021
Vulnerability identifier: #VU50544
CSH Severity: Medium
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-21057
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to a NULL pointer dereference error when processing PDF files. A remote attacker can create a specially crafted PDF file, trick the victim into opening it, trigger a NULL pointer dereference error and gain access to sensitive information.
Affected software
Adobe Reader
Adobe Acrobat
Adobe Acrobat
How to mitigate CVE-2021-21057
Install updates from vendor's website.
Adobe Reader - addressed in versions 17.011.30190, 20.001.30020, 21.001.20135
Adobe Acrobat - addressed in versions 17.011.30190, 20.001.30020, 21.001.20135
Adobe Acrobat - addressed in versions 17.011.30190, 20.001.30020, 21.001.20135