CVE-2021-43016 Adobe InCopy NULL Pointer Dereference Application Denial of Service
An attacker can cause a denial of service in Adobe InCopy by tricking a user into opening a specially crafted file.
- 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-2021-43016?
CVE-2021-43016 is a medium-severity vulnerability in Adobe Incopy, published on 22 Nov 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
Adobe InCopy version 16.4 (and earlier) is 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.
Weakness: CWE-476
Which versions are affected by CVE-2021-43016?
It affects 1 product.
Products include Adobe Incopy.
How do I fix CVE-2021-43016?
No fix has been published for CVE-2021-43016 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-43016 being exploited?
There is no known exploitation of CVE-2021-43016 in the wild and no public exploit code.
Other vulnerabilities in Adobe Incopy
- CVE-2021-21090 Adobe InCopy DOCX file parsing directory traversal vulnerability could lead to remote code execution
- CVE-2026-34706 InCopy | Out-of-bounds Write (CWE-787)
- CVE-2026-34707 InCopy | Heap-based Buffer Overflow (CWE-122)
- CVE-2026-34708 InCopy | Stack-based Buffer Overflow (CWE-121)
- CVE-2026-27287 InCopy | Out-of-bounds Read (CWE-125)
Sources
Also known as GHSA-m59q-4q6x-67mj.