NULL pointer dereference in Adobe InDesign - CVE-2026-84396
Published: October 16, 2026
Vulnerability identifier: #VU156081
CSH Severity: Medium
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-84396
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trick a victim to open a specially crafted file and perform a denial of service (DoS) attack.
Affected software
Adobe InDesign
How to mitigate CVE-2026-84396
Install updates from vendor's website.
Adobe InDesign - addressed in versions 20.5.5, 21.6