NULL pointer dereference in Adobe Reader and Adobe Acrobat - CVE-2021-44741

Vulnerability identifier: #VU59447

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-2021-44741

CWE-ID: CWE-476

Exploitation vector: Remote access

Exploit availability: No public exploit available

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 PDF file and perform a denial of service (DoS) attack.

Adobe Reader
Adobe Acrobat
Foxit PDF Reader for Windows
Foxit PDF Editor (formerly Foxit PhantomPDF)

Install updates from vendor's website.

Adobe Reader - addressed in versions 17.011.30207, 20.004.30020, 21.011.20039
Adobe Acrobat - addressed in versions 17.011.30207, 20.004.30020, 21.011.20039
Foxit PDF Reader for Windows - update to 11.2.1.53537
Foxit PDF Editor (formerly Foxit PhantomPDF) - update to 11.2.1.53537

• https://helpx.adobe.com/security/products/acrobat/apsb22-01.html

• Multiple vulnerabilities in Adobe Acrobat and Reader
• Multiple vulnerabilities in Foxit PDF Reader and Editor for Windows