CVE-2026-21281
Heap-Based Buffer Overflow in Adobe InCopy Allows 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 | incopy | to 19.5.5 (exc) |
| adobe | incopy | to 19.5.5 (inc) |
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 InCopy versions 21.0, 19.5.5 and earlier. It can allow an attacker to execute arbitrary code with the privileges of the current user if the user opens a specially crafted malicious file.
How can this vulnerability impact me? :
If exploited, this vulnerability can lead to arbitrary code execution, potentially allowing an attacker to take control of the affected system with the current user's privileges. This could result in data loss, system compromise, or other malicious activities.
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 InCopy (versions 21.0, 19.5.5 and earlier). Ensure that users are aware of the risk and do not interact with suspicious files. Additionally, update Adobe InCopy to a version that addresses this vulnerability once a patch is available.