Quick answers
- Is CVE-2026-84396 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-84396 being exploited in the wild.
- How severe is CVE-2026-84396?
- Medium severity, with a CVSS score of 5.5, published 22 September 2026.
- Which products and versions are affected?
- Adobe InDesign Desktop.
- Is there a fix for CVE-2026-84396?
- 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-2026-84396 attacked?
- It is attacked with local access, in a web application.
- Am I affected by CVE-2026-84396?
- Check whether you run Adobe InDesign Desktop. 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
InDesign is affected by a NULL pointer dereference vulnerability in document file handling. The vulnerability requires user interaction—specifically opening a malicious document file—to trigger the crash. Exploitation results in an application denial-of-service with no elevation of privilege or data compromise.
Affected products
- Adobe InDesign Desktop
Timeline
- 2026-09-22: disclosed