CVE-2026-83540
Description
When password or public key authentication is used with the Windows port of wolfSSHd, the Windows logon token acquired for one authenticated connection is not released before a token is acquired for a subsequent connection, resulting in user login poisoning between connections. A less privileged user with a valid account on the server can exploit this to force a login as a more privileged user. The vulnerability was introduced with the initial Windows port of wolfSSHd in wolfSSH version 1.4.15 and affects all versions through 1.5.0. Non-Windows builds of wolfSSHd are not affected.
How to fix
- wolfssh wolfssh1.6.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| wolfssh wolfssh | 1.4.15 ≤ v < 1.6.0 | 1.6.0 |
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