EUVD-2026-66751
GHSA-vx25-92gx-4xfv
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
If the zero-click text-message RCE claim holds, it is remote, unauthenticated, no-interaction with full code execution, matching AV:N/AC:L/PR:N/UI:N and C/I/A:H - though the claim is single-sourced.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
5DescriptionCVE.org
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.
AnalysisAI
Remote code execution in SimpleX Chat before v6.5 is claimed via the /Terminal/Notification.hs component, where a crafted payload delivered inside a normal text message is said to execute arbitrary commands with zero user interaction (CWE-94 code injection). If accurate, any user running a vulnerable build could be compromised simply by receiving a message. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The exploit as described requires only that the victim run a SimpleX Chat build before v6.5 and receive a crafted text message through the vulnerable /Terminal/Notification.hs code path - CVSS AV:N/AC:L/PR:N/UI:N indicates remote, unauthenticated, zero-click triggering against affected versions with no special configuration stated. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The input CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H = 9.8) describes a maximally severe, remote, unauthenticated, zero-click RCE. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: upgrade SimpleX Chat to v6.5 or later, which the description identifies as the first fixed release. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Within 24 hours, inventory SimpleX Chat deployments across your organization, documenting deployed versions and affected user counts. …
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Same weakness CWE-94 – Code Injection
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External POC / Exploit Code
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