CVE-2021-40726: Adobe Acrobat Reader DC AcroForm Field Use-After-Free Remote Code Execution Vulnerability
First published: Thu Oct 07 2021(Updated: )
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 when processing AcroForm field that could result in arbitrary code execution in the context of the current user. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
Credit: psirt@adobe.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Adobe Acrobat Reader Notification Manager | ||
| Adobe Acrobat Reader DC | >=17.011.30059<=17.011.30199 | |
| Adobe Acrobat Reader | >=17.011.30059<=17.011.30199 | |
| macOS | ||
| Microsoft Windows Operating System | ||
| Adobe Acrobat Reader DC | >=20.001.30005<=20.004.30006 | |
| Adobe Acrobat Reader | >=20.001.30005<=20.004.30006 | |
| Adobe Acrobat Reader DC | >=15.008.20082<=21.005.20058 | |
| Adobe Acrobat Reader | >=15.008.20082<=21.005.20058 | |
| Adobe Acrobat Reader DC | >=15.008.20082<=21.005.20060 | |
| Adobe Acrobat Reader | >=15.008.20082<=21.005.20060 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-40726?
CVE-2021-40726 has a critical severity rating due to its potential for arbitrary code execution.
How do I fix CVE-2021-40726?
To mitigate CVE-2021-40726, update Adobe Acrobat Reader DC to the latest version available.
Which versions of Acrobat Reader DC are affected by CVE-2021-40726?
CVE-2021-40726 affects Acrobat Reader DC versions 2021.005.20060 and earlier, 2020.004.30006 and earlier, and 2017.011.30199 and earlier.
What types of vulnerabilities are found in CVE-2021-40726?
CVE-2021-40726 is a use-after-free vulnerability that arises during the processing of AcroForm fields.
What are the potential impacts of CVE-2021-40726?
Exploitation of CVE-2021-40726 could result in arbitrary code execution in the context of the current user.
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