CVE-2026-34695 is a stack-based buffer overflow vulnerability (CWE-121) in Adobe InDesign Desktop affecting versions up to 20.5.3 and 21.3. Successful exploitation requires a victim to open a malicious file, which could lead to arbitrary code execution in the context of the current user. The vulnerability has a CVSS 3.1 base score of 7.8, indicating high impact on confidentiality, integrity, and availability. No official patch or remediation level has been provided in the available data.

If exploited, this vulnerability could allow an attacker to execute arbitrary code with the privileges of the current user, potentially leading to full compromise of the affected system's user context. The attack requires user interaction by opening a malicious file, limiting the attack vector to social engineering or similar delivery methods.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should exercise caution when opening files from untrusted sources and consider applying any available security workarounds or protections recommended by Adobe once published.