CVE-2021-44740: Adobe Acrobat Pro DC NULL Pointer Dereference could lead to Application-denial-of-service
First published: Fri Jan 14 2022(Updated: )
Acrobat Reader DC version 21.007.20099 (and earlier), 20.004.30017 (and earlier) and 17.011.30204 (and earlier) are affected by a Null pointer dereference vulnerability when parsing a specially crafted file. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service 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 Dc | >=15.008.20082<=21.007.20099 | |
| Adobe Acrobat Reader DC | >=15.008.20082<=21.007.20099 | |
| Microsoft Windows | ||
| Adobe Acrobat Reader | >=17.011.30059<=17.011.30204 | |
| Adobe Acrobat Reader | >=20.001.30005<=20.004.30017 | |
| Adobe Acrobat Reader | >=17.011.30059<=17.011.30204 | |
| Adobe Acrobat Reader | >=20.001.30005<=20.004.30017 | |
| Apple macOS |
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Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2021-44740.
What is the severity of CVE-2021-44740?
The severity of CVE-2021-44740 is medium with a rating of 5.5.
What software versions are affected by CVE-2021-44740?
Adobe Acrobat Reader DC versions 21.007.20099 and earlier, 20.004.30017 and earlier, and 17.011.30204 and earlier are affected.
How can an attacker exploit CVE-2021-44740?
An attacker can exploit CVE-2021-44740 by leveraging a null pointer dereference vulnerability when parsing a specially crafted file to achieve an application denial of service.
Are Microsoft Windows and Apple macOS vulnerable to CVE-2021-44740?
No, Microsoft Windows and Apple macOS are not vulnerable to CVE-2021-44740.
How can I fix CVE-2021-44740?
It is recommended to update Adobe Acrobat Reader DC to a version higher than 21.007.20099, 20.004.30017, or 17.011.30204 to fix CVE-2021-44740.
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