Qualys TRU Discovers Two New Vulnerabilities in OpenSSH (CVE-2025-26465 & CVE-2025-26466)
The Qualys Threat Research Unit (TRU) has discovered two vulnerabilities in OpenSSH. The first, identified as CVE-2025-26465, enables an active machine-in-the-middle attack on the OpenSSH client when the VerifyHostKeyDNS option is turned on. The second, CVE-2025-26466, impacts both the OpenSSH client and server, allowing a pre-authentication denial-of-service attack.
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