---
id: CVE-2026-52103
title: >-
  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 s…
summary: >-
  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 s…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-94
published: '2026-08-26'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T16:04:24.933'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-52103'
references:
  - url: 'https://te.mpe.st/disclosures/20260510-simplex.html'
    label: cve@mitre.org
tags:
  - nvd
epss: 0.00571
epssPercentile: 0.45986
ingestedAt: '2026-09-09T16:14:05.516Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.