CVE-2023-21596 Adobe InCopy Improper Input Validation Remote Code Execution Vulnerability
Attackers can execute arbitrary code by tricking users into opening malicious files in Adobe InCopy.
- 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-2023-21596?
CVE-2023-21596 is a high-severity code injection vulnerability in Adobe Incopy, published on 13 Jan 2023. 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 versions 18.0 (and earlier), 17.4 (and earlier) are affected by an Improper Input Validation vulnerability that could result in 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-20
Which versions are affected by CVE-2023-21596?
It affects 1 product.
Products include Adobe Incopy.
How do I fix CVE-2023-21596?
No fix has been published for CVE-2023-21596 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2023-21596 being exploited?
There is no known exploitation of CVE-2023-21596 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-33ff-c2wp-wfmh.