CVE-2026-34629
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 unsafe way.
If exploited, this flaw could allow an attacker to execute arbitrary code with the privileges of the current user, potentially taking control of the affected system.
Exploitation requires user interaction, meaning the victim must open the malicious file for the attack to succeed.
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, exercising caution with files from untrusted sources is critical.
Additionally, updating Adobe InDesign Desktop to a version later than 20.5.2 or 21.2 when a patch is available would be an effective mitigation step.
How can this vulnerability impact me? :
If exploited, this vulnerability can lead to arbitrary code execution on your system with the same privileges as the current user.
This could allow attackers to install malware, steal data, or perform other malicious actions depending on the user's permissions.
Since exploitation requires opening a malicious file, users must be cautious about files received from untrusted sources.