CVE-2021-39850: Adobe Acrobat Reader DC Null Pointer Dereference Could Lead To Application Denial-of-Service
Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Adobe Acrobat Reader DCto a version that resolves this vulnerability.Fixed in 2021.005.20060 - Upgrade
Upgrade
Adobe Acrobat Reader DCto a version that resolves this vulnerability.Fixed in 2020.004.30006 - Upgrade
Upgrade
Adobe Acrobat Reader DCto a version that resolves this vulnerability.Fixed in 2017.011.30199
Event History
Frequently Asked Questions
What is the vulnerability ID of this issue?
The vulnerability ID is CVE-2021-39850.
What is the severity level of CVE-2021-39850?
The severity level of CVE-2021-39850 is medium.
Which software versions are affected by CVE-2021-39850?
Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier), and 2017.011.30199 (and earlier) are affected by CVE-2021-39850.
How can an attacker exploit CVE-2021-39850?
An unauthenticated attacker could exploit CVE-2021-39850 to achieve an application denial-of-service in the context of the affected software.
Where can I find more information about CVE-2021-39850?
You can find more information about CVE-2021-39850 at the following link: [Adobe Security Bulletin APSB21-55](https://helpx.adobe.com/security/products/acrobat/apsb21-55.html).