CVE-2021-39844: Adobe Acrobat Reader CalRGB Out-of-Bounds Read Vulnerability
First published: Tue Sep 14 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 an out-of-bounds read vulnerability that could lead to disclosure of arbitrary memory information 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 | >=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-2021-39844?
CVE-2021-39844 has a severity rating that indicates it could potentially lead to disclosure of sensitive memory information.
How do I fix CVE-2021-39844?
To fix CVE-2021-39844, ensure you update to the latest version of Adobe Acrobat Reader DC or Adobe Acrobat DC that addresses this vulnerability.
What versions of Adobe software are affected by CVE-2021-39844?
CVE-2021-39844 affects Adobe Acrobat Reader DC versions up to 21.005.20060, 2020.004.30006, and 2017.011.30199, along with earlier versions.
Can CVE-2021-39844 be exploited remotely?
CVE-2021-39844 does not indicate a direct remote exploit vector but could be exploited in the context of the current user.
What types of systems are at risk from CVE-2021-39844?
CVE-2021-39844 primarily affects systems running vulnerable versions of Adobe Acrobat software on Windows and macOS.
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- agent/softwarecombine
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- 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