Quick answers
- Is CVE-2026-21275 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-21275 being exploited in the wild.
- How severe is CVE-2026-21275?
- High severity, with a CVSS score of 7.8, published 13 January 2026.
- Which products and versions are affected?
- Adobe InDesign Desktop 21.0, 19.5.5 and earlier.
- Is there a fix for CVE-2026-21275?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-21275 attacked?
- It is attacked with local access, in a software library.
- Am I affected by CVE-2026-21275?
- Check whether you run Adobe InDesign Desktop at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is an access of uninitialized pointer (CWE-824), a memory safety issue where the application attempts to dereference a pointer that has not been properly initialized. The vulnerable component is within InDesign's file parsing logic. Exploitation requires user interaction: a victim must be tricked into opening a malicious InDesign file. When a crafted file is opened, the uninitialized pointer access can lead to arbitrary code execution in the context of the user running InDesign. No evidence of active exploitation in the wild has been reported as of the advisory date.
Affected products
- Adobe InDesign Desktop 21.0, 19.5.5 and earlier
Timeline
- 2026-01-13: disclosed: CVE-2026-21275 published on NVD