CVE-2021-21021: 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 | <=20.013.20074 | |
| Adobe Acrobat Reader | >=17.0<=17.011.30188 | |
| Adobe Acrobat Reader | >=20.0<=20.001.300183 | |
| Adobe Acrobat Reader | <=20.013.20074 | |
| Apple iOS and macOS | ||
| Microsoft Windows |
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Frequently Asked Questions
What is the severity of CVE-2021-21021?
CVE-2021-21021 has a critical severity rating due to its potential to allow arbitrary code execution.
How do I fix CVE-2021-21021?
To fix CVE-2021-21021, ensure you update Adobe Acrobat Reader DC and related products to the latest available versions.
What versions of Adobe Acrobat are affected by CVE-2021-21021?
Adobe Acrobat Reader DC versions up to 20.013.20074, 2020.001.30018, and 2017.011.30188 and earlier are affected.
Can CVE-2021-21021 be exploited by an authenticated user?
No, CVE-2021-21021 can be exploited by an unauthenticated attacker.
What type of vulnerability is CVE-2021-21021?
CVE-2021-21021 is classified as a Use After Free vulnerability.
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