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CVE-2026-52103

Critical

Description

A zero-click remote code execution (RCE) vulnerability in the /Terminal/Notification.hs component of SimpleX Chat before v6.5 allows attackers to execute arbitrary commands in the context of the application without user interaction via sending a crafted payload in a text message.

SeverityCritical
CVSS9.8
Exploit probability—
ProductSimpleX Chat
PublishedAug 26, 2026
First seenAug 26, 2026
Weakness typeCWE-94Code injection

How to fix

Update
  • SimpleX Chat SimpleX Chat6.5 or later

Affected products

ProductAffected versionsFixed in
SimpleX Chat SimpleX ChatNo range specified6.5

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