CVE-2021-39836: Adobe Acrobat Reader DC AcroForm buttonGetIcon Use-After-Free Remote Code Execution Vulnerability
First published: Wed Sep 29 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 in the processing of the AcroForm buttonGetIcon action that could result in 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 | >=17.011.30059<=17.011.30199 | |
| Adobe Acrobat Reader | >=17.011.30059<=17.011.30199 | |
| Apple iOS and macOS | ||
| Microsoft Windows | ||
| Adobe Acrobat Reader | >=20.001.30005<=20.004.30006 | |
| Adobe Acrobat Reader | >=20.001.30005<=20.004.30006 | |
| Adobe Acrobat | >=15.008.20082<=21.005.20058 | |
| Adobe Acrobat Reader | >=15.008.20082<=21.005.20058 | |
| Adobe Acrobat | >=15.008.20082<=21.005.20060 | |
| Adobe Acrobat Reader | >=15.008.20082<=21.005.20060 |
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Frequently Asked Questions
What is the severity of CVE-2021-39836?
CVE-2021-39836 is considered to have a critical severity due to its potential for arbitrary code execution.
How do I fix CVE-2021-39836?
To fix CVE-2021-39836, update Adobe Acrobat Reader DC to the latest version as specified in Adobe's security updates.
Which versions of Adobe Acrobat Reader are affected by CVE-2021-39836?
Adobe Acrobat Reader versions 2021.005.20060 and earlier, 2020.004.30006 and earlier, as well as 2017.011.30199 and earlier are affected by CVE-2021-39836.
What types of systems are vulnerable to CVE-2021-39836?
CVE-2021-39836 affects systems running affected versions of Adobe Acrobat Reader on both Windows and macOS platforms.
Can CVE-2021-39836 be exploited remotely?
Yes, CVE-2021-39836 can be exploited remotely through specially crafted PDF files.
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- vendor/adobe
- canonical/adobe acrobat reader
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- version/adobe acrobat reader/17.011.30199
- vendor/apple
- canonical/apple ios and macos
- vendor/microsoft
- canonical/microsoft windows
- version/adobe acrobat reader/20.001.30005
- version/adobe acrobat reader/20.004.30006
- canonical/adobe acrobat
- version/adobe acrobat/15.008.20082
- version/adobe acrobat/21.005.20058
- version/adobe acrobat reader/15.008.20082
- version/adobe acrobat reader/21.005.20058
- version/adobe acrobat/21.005.20060
- version/adobe acrobat reader/21.005.20060