CVE-2026-78417
Received Received - Intake

Insufficient Verification in Devolutions RDM IronVNC Client

Publication date: 2026-08-24

Last updated on: 2026-08-24

Assigner: Devolutions Inc.

Description
Insufficient verification of data authenticity in the IronVNC client in Devolutions Remote Desktop Manager 2026.2.17.0 and earlier, 2026.1.24.0 and earlier, allows an on-path attacker to intercept and tamper with VNC sessions via automatic acceptance of the server's RSA key during RSA-AES authentication.

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Meta Information

Published
2026-08-24
Last Modified
2026-08-24
Generated
2026-08-24
AI Q&A
2026-08-24
EPSS Evaluated
N/A
NVD
CVE-2026-78417
EUVD
EUVD-2026-65063

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
devolutions remote_desktop_manager to 2026.2.18.0 (exc)
devolutions remote_desktop_manager to 2026.1.25.0 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-345 The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

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Executive Summary

This vulnerability is an insufficient verification of data authenticity in the IronVNC client within Devolutions Remote Desktop Manager. It allows an on-path attacker to intercept and tamper with VNC sessions by exploiting automatic acceptance of untrusted VNC server RSA keys during RSA-AES authentication.

Impact Analysis

An attacker could intercept and alter data transmitted during VNC sessions, leading to unauthorized access or manipulation of sensitive information. This could result in data breaches, loss of confidentiality, or integrity issues.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR and HIPAA by enabling unauthorized access to personal or health data, violating confidentiality and integrity requirements. Organizations may face legal penalties or reputational damage.

Mitigation Strategies

Upgrade to Remote Desktop Manager version 2026.2.18.0 or 2026.1.25.0 or higher to address the vulnerability.

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