CVE-2026-52103 — CRITICAL (9.8)

Vulnerability 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.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-94

References

https://te.mpe.st/disclosures/20260510-simplex.html

FAQ

What is CVE-2026-52103?

CVE-2026-52103 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 appli...

How severe is CVE-2026-52103?

CVE-2026-52103 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-52103?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.