# CVE-2026-78417: Remote Desktop Manager: Insufficient Verification of Data Authenticity

CVE-2026-78417 is fixed in Remote Desktop Manager on 1 platform by Remote Desktop Manager 2026.2.18.0 (version 2026.2.18.0), released August 20, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-78417
- Priority: Routine
- CVSS: 4.3
- EPSS: 0.0015
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 24, 2026
- Weakness: CWE-345: Insufficient Verification of Data Authenticity
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-78417

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | Remote Desktop Manager | 2026.2.18.0 | [Remote Desktop Manager 2026.2.18.0](https://patchblox.com/security/data/fix/windows-app/devolutions.remotedesktopmanager-2026.2.18.0.md) | Aug 20, 2026 |

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Data as of 2026-11-07T18:46:35Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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