CVE-2026-34627
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
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, ensure that users do not open malicious files in affected versions of Adobe InDesign Desktop (versions 20.5.2, 21.2 and earlier).
Consider updating Adobe InDesign Desktop to a version later than 21.2 or 20.5.2 once a patch is available.
Educate users about the risks of opening files from untrusted sources to prevent exploitation.
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.
This overflow can lead to arbitrary code execution, meaning an attacker could run malicious code on the affected system with the privileges of the current user.
Exploitation requires user interaction, specifically that the victim opens the malicious file.
How can this vulnerability impact me? :
If exploited, this vulnerability can allow an attacker to execute arbitrary code on your system with the same permissions as the current user.
This could lead to unauthorized actions such as installing malware, stealing data, or taking control of the affected system.
Since exploitation requires opening a malicious file, users must be cautious about files received from untrusted sources.