NULL pointer dereference in Adobe Reader and Adobe Acrobat - CVE-2021-39853
Published: September 14, 2021
Vulnerability identifier: #VU56551
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-39853
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trick the victim to open a specially crafted file and perform a denial of service (DoS) attack.
Affected software
Adobe Reader
Adobe Acrobat
Adobe Acrobat
How to mitigate CVE-2021-39853
Install updates from vendor's website.
Adobe Reader - addressed in versions 17.011.30202, 20.004.30015, 21.007.20091
Adobe Acrobat - addressed in versions 17.011.30202, 20.004.30015, 21.007.20091
Adobe Acrobat - addressed in versions 17.011.30202, 20.004.30015, 21.007.20091