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.
Metrics
Affected Vendors & Products
References
History
Tue, 13 Oct 2026 17:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Wolfssh
Wolfssh wolfssh |
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| CPEs | cpe:2.3:a:wolfssh:wolfssh:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Wolfssh
Wolfssh wolfssh |
|
| Metrics |
cvssV3_1
|
Wed, 07 Oct 2026 12:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Wed, 07 Oct 2026 04:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Wolfssl
Wolfssl wolfssh |
|
| Vendors & Products |
Wolfssl
Wolfssl wolfssh |
Wed, 07 Oct 2026 02:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | wolfSSHd on Windows race condition leading to logon token reused across connections | |
| Weaknesses | CWE-287 CWE-613 |
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| References |
| |
| Metrics |
cvssV4_0
|
Status: PUBLISHED
Assigner: wolfSSL
Published: 2026-10-07T02:40:35.137Z
Updated: 2026-10-07T11:29:08.132Z
Reserved: 2026-08-31T17:29:54.256Z
Link: CVE-2026-83540
Updated: 2026-10-07T11:29:02.152Z
Status : Analyzed
Published: 2026-10-07T03:16:59.730
Modified: 2026-10-13T17:33:17.707
Link: CVE-2026-83540
No data.