High · published January 14, 2026
⚡ A crafty malicious file can trigger a heap-based buffer overflow in InDesign, allowing an attacker to execute arbitrary code! 🔥 Picture this like a waiter bringing you a dish with a hidden surprise — one moment you’re enjoying dessert, and the next, your meal's been swapped for something utterly unwanted. That's what happens here when a user opens a rogue file without knowing what’s lurking inside! If exploited, this vulnerability could let attackers run any code they choose in your user context. That means they could steal your data, access sensitive information, or even take control of your machine. The potential consequences are absolutely devastating!
Picture this like a waiter bringing you a dish with a hidden surprise — one moment you’re enjoying dessert, and the next, your meal's been swapped for something utterly unwanted. That's what happens here when a user opens a rogue file without knowing what’s lurking inside! CVE-2026-21277 is a heap-based buffer overflow in InDesign Desktop versions 21.0 and 19.5.5 and earlier, which allows for arbitrary code execution when a malicious file is opened by a user. This requires user interaction, making it a sneaky yet dangerous threat.
If exploited, this vulnerability could let attackers run any code they choose in your user context. That means they could steal your data, access sensitive information, or even take control of your machine. The potential consequences are absolutely devastating! To protect yourself, ensure you update InDesign to the latest version immediately. Additionally, be cautious about opening files from untrusted sources to prevent falling victim to this vulnerability. Regularly review your security practices to reinforce your defenses. You've got this! Stay vigilant and follow these steps to keep your environment secure! 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| adobe/indesign | < 20.5.1 | 20.5.1 |
| adobe/indesign | ≥ 21.0, < 21.1 | 21.1 |