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CVE PROGRAM SOURCE RECORD7.7 High

CVE-2026-83540

wolfSSHd on Windows race condition leading to logon token reused across connections

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

wolfSSL wolfSSH

Default version status: unaffected

  • 1.4.15 to ≤ 1.5.0affected

References