CVE-2026-34700 InDesign Desktop | Out-of-bounds Write (CWE-787)
An out-of-bounds write vulnerability in Adobe InDesign Desktop allows arbitrary code execution if a user opens a malicious 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-2026-34700?
CVE-2026-34700 is a high-severity memory corruption vulnerability in Adobe Indesign, published on 9 Jun 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
InDesign Desktop versions 21.3, 20.5.3 and earlier are affected by an out-of-bounds write 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-787
Which versions are affected by CVE-2026-34700?
It affects 1 product.
Products include Adobe Indesign.
How do I fix CVE-2026-34700?
No fix has been published for CVE-2026-34700 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-2026-34700 being exploited?
There is no known exploitation of CVE-2026-34700 in the wild and no public exploit code.
Other vulnerabilities in Adobe Indesign
- CVE-2019-7107 Code injection in InDesign
- CVE-2017-11302 Memory corruption in Adobe InDesign 12.1.0 and earlier versions
- CVE-2016-7886 Memory corruption in Adobe InDesign 11.4.1 and earlier, InDesign Server 11.0.0 and earlier
- CVE-2021-36004 Adobe InDesign CoolType out of bounds write vulnerability could lead to arbitrary stack manipulation
- CVE-2021-21098 Adobe InDesign PCX file parsing out-of-bounds write vulnerability could lead to remote code execution
Sources
Also known as GHSA-p36q-gh39-3mgh.