CVE-2021-21039: Acrobat Reader DC Use-After-Free Vulnerability Could Lead To Arbitrary Code Execution
First published: Tue Feb 09 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-2021-21039?
CVE-2021-21039 has a severity rating of critical due to its potential for arbitrary code execution.
How do I fix CVE-2021-21039?
To fix CVE-2021-21039, users should update Adobe Acrobat Reader DC and Acrobat to the latest version as specified by Adobe.
Which versions are affected by CVE-2021-21039?
CVE-2021-21039 affects Adobe Acrobat Reader DC versions 2020.013.20074 and earlier, 2020.001.30018 and earlier, and 2017.011.30188 and earlier.
Can CVE-2021-21039 be exploited remotely?
Yes, CVE-2021-21039 can be exploited by an unauthenticated attacker to achieve arbitrary code execution.
What type of vulnerability is CVE-2021-21039?
CVE-2021-21039 is classified as a Use After Free vulnerability.
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