CVE-2021-21042: Acrobat Reader DC Out-Of-Bounds Read Information Disclosure Vulnerability
First published: Thu Feb 11 2021(Updated: )
Acrobat Reader DC versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by an Out-of-bounds Read vulnerability that could lead to arbitrary disclosure of information in the memory stack. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. 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-2021-21042?
CVE-2021-21042 is categorized as a medium-severity vulnerability affecting specific versions of Adobe Acrobat Reader DC.
How do I fix CVE-2021-21042?
To fix CVE-2021-21042, users should update their Acrobat Reader DC to the latest version available from Adobe.
What versions are affected by CVE-2021-21042?
CVE-2021-21042 affects Acrobat Reader DC versions 2020.013.20074 and earlier, 2020.001.30018 and earlier, and 2017.011.30188 and earlier.
What type of vulnerability is CVE-2021-21042?
CVE-2021-21042 is an Out-of-bounds Read vulnerability that may allow information disclosure from the memory stack.
Can exploitation of CVE-2021-21042 lead to data breach?
Yes, exploitation of CVE-2021-21042 could potentially lead to arbitrary disclosure of sensitive information.
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