Access of Uninitialized Pointer in Adobe InDesign - CVE-2026-21276
Published: January 14, 2026
Vulnerability identifier: #VU121545
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-21276
CWE-ID: CWE-824
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Adobe
Affected software:
Adobe InDesign
Adobe InDesign
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to a boundary error when handling untrusted data. A remote attacker can trick the victim into opening a specially crafted file, trigger access to an uninitialized pointer and execute arbitrary code on the system.
How to mitigate CVE-2026-21276
Install updates from vendor's website.