CVE-2026-21357
HIGHCVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
2Description
InDesign Desktop versions 21.1, 20.5.1 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Analysis
Arbitrary code execution in Adobe InDesign versions 21.1, 20.5.1, and earlier through a heap buffer overflow vulnerability triggered by opening a malicious file. The vulnerability requires user interaction and executes with the privileges of the current user, with no patch currently available. …
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Remediation
Within 24 hours: Inventory all InDesign installations and identify affected versions (21.1, 20.5.1, and earlier). Issue a user advisory prohibiting opening InDesign files from untrusted sources. …
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External POC / Exploit Code
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