Vulnerability · Published Mar 20, 2026 · Assigned by DEVOLUTIONS
CVE-2026-4434
High 8.1
In plain English
A high-severity improper certificate validation in Server from Devolutions. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.1%top 96.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Improper certificate validation in the PAM propagation WinRM connections allows a network attacker to perform a man-in-the-middle attack via disabled TLS certificate verification.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Devolutions | Server | 0 – before 2026.1 |
Weakness: CWE-295 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H