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.

Routine

CVSS

4.3

No vendor severity

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0015

4th percentile

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

Product	Fixed in	Fix	Released
Windows apps
Remote Desktop Manager	2026.2.18.0	Remote Desktop Manager 2026.2.18.0	Aug 20, 2026

Details

Published
August 24, 2026
Weakness
CWE-345: Insufficient Verification of Data Authenticity
Vendor advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-78417

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