CVE-2026-78417
Devolutions Remote Desktop Manager IronVNC Improper Authentication Verification
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.
INFO
Published Date :
Aug. 24, 2026, 7:17 p.m.
Last Modified :
Aug. 24, 2026, 7:17 p.m.
Remotely Exploit :
No
Source :
[email protected]
Solution
- Update Devolutions Remote Desktop Manager to the latest version.
- Apply vendor patches for IronVNC client.
- Verify VNC session integrity after update.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-78417.
| URL | Resource |
|---|---|
| https://devolutions.net/security/advisories/DEVO-2026-0029/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-78417 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-78417
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-78417 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-78417 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Aug. 24, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Devolutions', 'product': 'Remote Desktop Manager', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '2026.2.18', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Devolutions', 'product': 'Remote Desktop Manager', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '2026.1.25', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}] 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. Added CWE CWE-345 Added Reference https://devolutions.net/security/advisories/DEVO-2026-0029/