CVE-2021-39846: Adobe Acrobat Reader /Parent Property Recursive Stack Overflow
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 stack overflow vulnerability due to insecure handling of a crafted PDF file, potentially resulting in memory corruption in the context of the current user. Exploitation requires user interaction in that a victim must open a crafted PDF file in Acrobat Reader.
Credit: psirt@adobe.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Adobe Acrobat Reader | >=20.001.30005<=20.004.30006 | |
| Adobe Acrobat Reader | >=20.001.30005<=20.004.30006 | |
| Apple iOS and macOS | ||
| Microsoft Windows | ||
| 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 | |
| Adobe Acrobat Reader | >=17.011.30059<=17.011.30199 | |
| Adobe Acrobat Reader | >=17.011.30059<=17.011.30199 |
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Frequently Asked Questions
What is the severity of CVE-2021-39846?
CVE-2021-39846 is rated as a critical vulnerability due to its potential to cause memory corruption.
How do I fix CVE-2021-39846?
To fix CVE-2021-39846, update Adobe Acrobat Reader DC to the latest version available.
Which versions of Acrobat Reader are affected by CVE-2021-39846?
CVE-2021-39846 affects Acrobat Reader DC versions 2021.005.20060 and earlier, 2020.004.30006 and earlier, and 2017.011.30199 and earlier.
What types of attacks can exploit CVE-2021-39846?
CVE-2021-39846 can be exploited through specially crafted PDF files that trigger a stack overflow.
What impact does CVE-2021-39846 have on user systems?
Exploitation of CVE-2021-39846 may lead to memory corruption, allowing potential attackers to execute arbitrary code on the affected system.
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- agent/first-publish-date
- agent/event
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/adobe
- canonical/adobe acrobat reader
- version/adobe acrobat reader/20.001.30005
- version/adobe acrobat reader/20.004.30006
- vendor/apple
- canonical/apple ios and macos
- vendor/microsoft
- canonical/microsoft windows
- 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
- version/adobe acrobat reader/17.011.30059
- version/adobe acrobat reader/17.011.30199