CVE-2026-78417

Published Aug 24, 2026 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title On-Path Attacker Can Tamper with VNC Sessions via Unverified RSA Key Acceptance
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N'}

Type Values Removed Values Added
Title On-Path Attacker Can Tamper with VNC Sessions via Unverified RSA Key Acceptance
Type Values Removed Values Added
First Time appeared Devolutions
Devolutions remote Desktop Manager
Vendors & Products Devolutions
Devolutions remote Desktop Manager
Type Values Removed Values Added
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.
Weaknesses CWE-345
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
DEVOLUTIONS
Published
Updated
Aug 28, 2026, 5:33 PM
Reserved
Aug 24, 2026, 3:10 PM
Status
Awaiting Analysis
Published
Aug 24, 2026, 7:17 PM
Modified
Oct 12, 2026, 3:10 PM