CVE-2026-34628
Heap-Based Buffer Overflow in Adobe InDesign Enables Code Execution
Publication date: 2026-04-14
Last updated on: 2026-04-16
Assigner: Adobe Systems Incorporated
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| adobe | indesign | to 20.5.3 (exc) |
| adobe | indesign | From 21.0 (inc) to 21.3 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-122 | A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a heap-based buffer overflow found in Adobe InDesign Desktop versions 20.5.2, 21.2, and earlier. It occurs when a user opens a specially crafted malicious file, which can cause the program to overwrite memory in an unintended way.
Exploiting this flaw could allow an attacker to execute arbitrary code with the privileges of the current user.
However, exploitation requires user interaction, meaning the victim must open the malicious file for the attack to succeed.
How can this vulnerability impact me? :
If exploited, this vulnerability can lead to arbitrary code execution within the context of the current user.
This means an attacker could potentially run malicious code, steal data, install malware, or take control of the affected system with the same permissions as the user who opened the malicious file.
The impact is significant especially if the user has high privileges on the system.
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, avoid opening malicious files in affected versions of Adobe InDesign Desktop (versions 20.5.2, 21.2 and earlier). Since exploitation requires user interaction, do not open files from untrusted or unknown sources.
Additionally, update Adobe InDesign Desktop to a version later than 20.5.2 or 21.2 once a patch is available to address this heap-based buffer overflow vulnerability.