CVE-2021-21063: Acrobat Reader DC Buffer Overflow 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 Memory corruption vulnerability when parsing a specially crafted PDF file. 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 | >=17.011.30059<=17.011.30188 | |
| Adobe Acrobat Reader | >=20.001.30005<=20.001.30018 | |
| Adobe Acrobat Reader DC | >=15.008.20082<=20.013.20074 | |
| Adobe Acrobat Reader Notification Manager | >=17.011.30059<=17.011.30188 | |
| Adobe Acrobat Reader Notification Manager | >=20.001.30005<=20.001.30018 | |
| Adobe Acrobat Reader | >=15.008.20082<=20.013.20074 | |
| macOS | ||
| Microsoft Windows Operating System |
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Frequently Asked Questions
What is the severity of CVE-2021-21063?
CVE-2021-21063 has been classified as a critical vulnerability due to its potential for remote code execution.
How do I fix CVE-2021-21063?
To fix CVE-2021-21063, users should update Adobe Acrobat Reader DC and Acrobat to the latest versions.
What versions are affected by CVE-2021-21063?
CVE-2021-21063 affects Adobe Acrobat Reader DC versions 2020.013.20074 and earlier, 2020.001.30018 and earlier, as well as Adobe Acrobat versions 2017.011.30188 and earlier.
Can CVE-2021-21063 be exploited remotely?
Yes, an unauthenticated attacker can exploit CVE-2021-21063 to execute arbitrary code by leveraging a specially crafted PDF file.
Is it safe to open PDF files in Adobe Acrobat Reader DC if unpatched for CVE-2021-21063?
No, opening PDF files in an unpatched version of Adobe Acrobat Reader DC poses a significant security risk due to CVE-2021-21063.
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