CWE
416
Advisory Published
Updated

CVE-2021-28635: Adobe Acrobat Reader Use-After-Free Vulnerability

First published: Tue Jul 13 2021(Updated: )

Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (and earlier) are affected by a use-after-free 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 SoftwareAffected VersionHow to fix
Adobe Acrobat Reader>=15.008.20082<=21.005.20054
Adobe Acrobat Reader>=17.011.30059<=17.011.30197
Adobe Acrobat Reader>=20.001.30005<=20.004.30005
Adobe Acrobat Reader Notification Manager>=15.008.20082<=21.005.20054
Adobe Acrobat Reader Notification Manager>=17.011.30059<=17.011.30197
Adobe Acrobat Reader Notification Manager>=20.001.30005<=20.004.30005

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Frequently Asked Questions

  • What versions of Adobe Acrobat DC are affected by CVE-2021-28635?

    CVE-2021-28635 affects Adobe Acrobat DC versions 2021.005.20054 and earlier, 2020.004.30005 and earlier, and 2017.011.30197 and earlier.

  • What is the impact of CVE-2021-28635?

    CVE-2021-28635 allows an unauthenticated attacker to achieve arbitrary code execution through a use-after-free vulnerability.

  • How can I mitigate CVE-2021-28635?

    To mitigate CVE-2021-28635, it is recommended to upgrade to the latest version of Adobe Acrobat DC released after 2021.005.20054.

  • Is there a workaround for CVE-2021-28635?

    Currently, there are no known workarounds for CVE-2021-28635, so updating to a fixed version is the best approach.

  • How critical is the CVE-2021-28635 vulnerability?

    CVE-2021-28635 is considered critical due to its potential to allow arbitrary code execution.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203