CVE-2026-21357
Heap-Based Buffer Overflow in Adobe InDesign Enables Code Execution
Publication date: 2026-02-10
Last updated on: 2026-02-11
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 20.5.2 (exc) |
| adobe | indesign | From 21.0 (inc) to 21.2 (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(). |
| CWE-787 | The product writes data past the end, or before the beginning, of the intended buffer. |
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 21.1, 20.5.1, 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.
Exploiting this vulnerability could allow an attacker to execute arbitrary code with the same privileges as the current user.
How can this vulnerability impact me? :
If exploited, this vulnerability can lead to arbitrary code execution, meaning an attacker could run malicious code on your system with your user privileges.
This could result in unauthorized actions such as installing malware, stealing data, or taking control of your system.
However, exploitation requires user interaction, specifically opening a malicious file.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
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