CVE-2021-21040: 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-2021-21040?
CVE-2021-21040 is classified as a critical vulnerability that could lead to arbitrary code execution.
How do I fix CVE-2021-21040?
To fix CVE-2021-21040, update Adobe Acrobat Reader DC and Acrobat to the latest versions as recommended by Adobe.
Which versions are affected by CVE-2021-21040?
CVE-2021-21040 affects Adobe Acrobat Reader DC versions 2020.013.20074 and earlier, 2020.001.30018 and earlier, and 2017.011.30188 and earlier.
Can CVE-2021-21040 be exploited by remote attackers?
Yes, CVE-2021-21040 can be exploited by unauthenticated remote attackers to execute arbitrary code.
What type of vulnerability is CVE-2021-21040?
CVE-2021-21040 is a Use After Free vulnerability impacting Adobe Acrobat products.
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