CVE-2026-27287 InCopy | Out-of-bounds Read (CWE-125)
An out-of-bounds read in Adobe InCopy allows attackers to execute arbitrary code via a crafted file, requiring user interaction to open the malicious document.
- 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-2026-27287?
CVE-2026-27287 is a high-severity memory corruption vulnerability in Adobe Incopy, published on 14 Apr 2026. 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
InCopy versions 20.5.2, 21.2 and earlier are affected by an out-of-bounds read vulnerability when parsing a crafted file, which could result in a read past the end of an allocated memory structure. An attacker could leverage this vulnerability to execute code 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-125
Which versions are affected by CVE-2026-27287?
It affects 1 product.
Products include Adobe Incopy.
How do I fix CVE-2026-27287?
No fix has been published for CVE-2026-27287 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-27287 being exploited?
There is no known exploitation of CVE-2026-27287 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-2026-34631 InCopy | Out-of-bounds Write (CWE-787)
Sources
Also known as GHSA-9fhw-q4vh-f5xw.