CVE-2021-21036: Acrobat Reader DC Integer 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 an Integer Overflow vulnerability. 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 | >=17.0<=17.011.30188 | |
| Adobe Acrobat Reader | >=20.0<=20.001.30018 | |
| Adobe Acrobat | <=20.013.20074 | |
| Adobe Acrobat Reader | >=17.0<=17.011.30188 | |
| Adobe Acrobat Reader | >=20.0<=20.001.300183 | |
| Adobe Acrobat Reader | <=20.013.20074 | |
| Apple iOS and macOS | ||
| Microsoft Windows |
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Frequently Asked Questions
What is the severity of CVE-2021-21036?
CVE-2021-21036 is classified as a critical vulnerability that can lead to arbitrary code execution.
Who is affected by CVE-2021-21036?
CVE-2021-21036 affects Adobe Acrobat Reader DC versions 2020.013.20074 and earlier, along with certain versions of Adobe Acrobat and Acrobat Reader.
How do I fix CVE-2021-21036?
To mitigate CVE-2021-21036, users should update to the latest version of Adobe Acrobat or Acrobat Reader.
Can I still use my version of Adobe Acrobat if it’s vulnerable to CVE-2021-21036?
It is not recommended to use vulnerable versions of Adobe Acrobat due to the risk of exploitation from the CVE-2021-21036 vulnerability.
What kind of attack can exploit CVE-2021-21036?
An unauthenticated attacker can exploit CVE-2021-21036 to achieve arbitrary code execution via crafted PDF files.
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