CVE-2026-34695 is a stack-based buffer overflow vulnerability (CWE-121) affecting Adobe InDesign Desktop versions 21.3, 20.5.3, and earlier. This vulnerability allows an attacker to execute arbitrary code in the context of the current user if the victim opens a crafted malicious file. The CVSS v3.1 base score is 7.8, indicating high severity with local attack vector, low attack complexity, no privileges required, but user interaction needed. No official fix or patch has been documented at this time.

Successful exploitation could result in arbitrary code execution with the privileges of the current user, potentially leading to full compromise of the affected system under the user's context. The attack requires user interaction, limiting the attack vector to scenarios where a user opens a malicious file.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch is available, users should avoid opening files from untrusted or unknown sources to reduce the risk of exploitation.