CVE-2021-39859: Use After Free Adobe Acrobat Pro DC [HB-21-0339]
Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a Use After Free vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Affected Software
Event History
Frequently Asked Questions
What is the vulnerability ID for this vulnerability?
The vulnerability ID for this vulnerability is CVE-2021-39859.
What software versions are affected by this vulnerability?
Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by this vulnerability.
What is the severity of CVE-2021-39859?
The severity of CVE-2021-39859 is medium with a severity value of 5.5.
How can an attacker exploit this vulnerability?
An attacker can leverage this vulnerability to bypass mitigations such as ASLR and potentially disclose sensitive memory.
Where can I find more information about this vulnerability?
You can find more information about this vulnerability at the following link: https://helpx.adobe.com/security/products/acrobat/apsb21-55.html