CVE-2021-21028: Acrobat Reader DC Use-After-Free Vulnerability Could Lead To Arbitrary Code Execution
First published: Thu Feb 11 2021(Updated: )
Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by a Use After Free vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Credit: psirt@adobe.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Adobe Acrobat Reader | >=17.0<=17.011.30188 | |
| Adobe Acrobat Reader | >=20.0<=20.001.30018 | |
| Adobe Acrobat Dc | <=20.013.20074 | |
| Adobe Acrobat Reader | >=17.0<=17.011.30188 | |
| Adobe Acrobat Reader | >=20.0<=20.001.300183 | |
| Adobe Acrobat Reader DC | <=20.013.20074 | |
| Apple macOS | ||
| Microsoft Windows |
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Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2021-21028.
How severe is CVE-2021-21028?
CVE-2021-21028 has a severity score of 8.8, classified as high.
Which versions of Acrobat Reader DC are affected by CVE-2021-21028?
Acrobat Reader DC versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier), and 2017.011.30188 (and earlier) are affected by CVE-2021-21028.
What is the impact of CVE-2021-21028?
CVE-2021-21028 allows an unauthenticated attacker to achieve arbitrary code execution in the context of the currently logged-in user.
Is Adobe Acrobat the only affected software?
No, Adobe Acrobat and Adobe Acrobat Reader versions mentioned earlier are affected by CVE-2021-21028.
How can I fix CVE-2021-21028?
To fix CVE-2021-21028, update to Acrobat Reader DC version 2021.001.20135 (or later) or 2020.001.30179 (or later), depending on your installed version.
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