CVE-2021-28639 Adobe Acrobat Reader DC setAction Use-After-Free Remote Code Execution Vulnerability
An attacker can achieve arbitrary code execution by tricking a user into opening a malicious file in Adobe Acrobat Reader.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-28639?
CVE-2021-28639 is a high-severity use after free vulnerability in Adobe Acrobat Dc, published on 20 Aug 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (and earlier) are affected by an 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.
Weakness: CWE-416
Which versions are affected by CVE-2021-28639?
It affects 2 products.
Products include Adobe Acrobat Dc, Adobe Acrobat Reader Dc.
How do I fix CVE-2021-28639?
No fix has been published for CVE-2021-28639 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2021-28639 being exploited?
There is no known exploitation of CVE-2021-28639 in the wild and no public exploit code.
Other vulnerabilities in Adobe Acrobat Dc
Sources
Also known as GHSA-wv7j-84hj-89vg.