CVE-2026-21358
Heap-Based Buffer Overflow in Adobe InDesign Causes DoS
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 the application processes certain data, leading to memory corruption.
An attacker can exploit this by tricking a user into opening a malicious file, which then causes the application to crash.
How can this vulnerability impact me? :
Exploitation of this vulnerability can result in a denial-of-service condition by crashing the Adobe InDesign application.
This disruption can affect productivity and availability of services relying on the application.
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?
To mitigate this vulnerability, avoid opening malicious files in affected versions of Adobe InDesign Desktop (versions 21.1, 20.5.1 and earlier). Since exploitation requires user interaction by opening a malicious file, educating users to not open untrusted files can reduce risk.
Additionally, consider updating Adobe InDesign Desktop to a version later than 21.1 or 20.5.1 once a patch is available to address the heap-based buffer overflow vulnerability.