CVE-2021-40723: Acrobat Reader DC Out-Of-Bounds Read Information Disclosure Vulnerability
First published: Thu Sep 07 2023(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 out-of-bounds read vulnerability that could lead to disclosure of sensitive memory. 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 psirt@adobe.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Adobe Acrobat Reader | <20.001.30020 | |
| Adobe Acrobat Reader | >=20.0<20.001.30020 | |
| Adobe Acrobat Dc | <21.001.20135 | |
| Adobe Acrobat Reader | <17.011.30190 | |
| Adobe Acrobat Reader | >=20.0<20.001.30020 | |
| Adobe Acrobat Reader DC | <21.001.20135 | |
| Apple macOS | ||
| Microsoft Windows | ||
| Adobe Acrobat Reader | <2020.001.30020 | |
| Adobe Acrobat Reader | >=2020<2020.001.30020 | |
| Adobe Acrobat Dc | <2021.001.20135 | |
| Adobe Acrobat Reader | <2017.011.30190 | |
| Adobe Acrobat Reader | >=2020<2020.001.30020 | |
| Adobe Acrobat Reader DC | <2021.001.20135 |
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Frequently Asked Questions
What is CVE-2021-40723?
CVE-2021-40723 is an out-of-bounds read vulnerability in Adobe Acrobat Reader DC versions 2020.013.20074 and earlier, 2020.001.30018 and earlier, and 2017.011.30188 and earlier.
What is the severity of CVE-2021-40723?
CVE-2021-40723 has a severity rating of medium with a CVSS score of 5.5.
Which software versions are affected by CVE-2021-40723?
Adobe Acrobat Reader DC versions 2020.013.20074 and earlier, 2020.001.30018 and earlier, and 2017.011.30188 and earlier are affected by CVE-2021-40723.
What is the impact of CVE-2021-40723?
CVE-2021-40723 could lead to the disclosure of sensitive memory and allow an attacker to bypass mitigations.
Is Adobe Acrobat Reader DC the only software affected by CVE-2021-40723?
Yes, Adobe Acrobat Reader DC is the only software affected by CVE-2021-40723.
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