CVE-2026-21277
Heap-Based Buffer Overflow in Adobe InDesign Enables Code Execution
Publication date: 2026-01-13
Last updated on: 2026-01-13
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_desktop | to 19.5.5 (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 in Adobe InDesign Desktop versions 21.0, 19.5.5 and earlier. It can allow an attacker to execute arbitrary code with the privileges of the current user. Exploitation requires the victim to open a malicious file.
How can this vulnerability impact me? :
If exploited, this vulnerability could allow an attacker to run arbitrary code on your system with your user privileges, potentially leading to data theft, system compromise, or other malicious actions.
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, avoid opening files from untrusted or unknown sources in affected versions of Adobe InDesign (versions 21.0, 19.5.5 and earlier). Ensure that users are aware of the risk and exercise caution with files received via email or downloaded from the internet. Additionally, update Adobe InDesign to a version later than 21.0 or 19.5.5 once a patch is available.