Vulnerability · Published Aug 24, 2026 · Assigned by DEVOLUTIONS
CVE-2026-78417
Medium 4.3
In plain English
A medium-severity insufficient verification of data authenticity in Remote Desktop Manager from Devolutions. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).
Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.2%top 95.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Devolutions | Remote Desktop Manager | 0 – before 2026.2.18 |
| Devolutions | Remote Desktop Manager | 0 – before 2026.1.25 |
Weakness: CWE-345 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N