The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8051-1 advisory.

    It was discovered that libssh clients incorrectly handled the key exchange process. A remote attacker     could possibly use this issue to cause libssh clients to crash, resulting in a denial of service.
    (CVE-2025-8277)

    It was discovered that the libssh SCP client incorrectly sanitized paths received from servers. A remote     attacker could use this issue to cause libssh SCP clients to overwrite files outside of the working     directory and possibly execute arbitrary code. (CVE-2026-0964)

    It was discovered that libssh incorrectly handled parsing configuration files. A local attacker could     possibly use this issue to cause libssh to access non-regular files, resulting in a denial of service.
    (CVE-2026-0965)

    It was discovered that libssh incorrectly handled the ssh_get_hexa() function. A remote attacker could     possibly use this issue to cause libssh to crash, resulting in a denial of service. (CVE-2026-0966)

    It was discovered that libssh incorrectly handled certain regular expressions. A local attacker could     possibly use this issue to cause libssh to consume resources, resulting in a denial of service.
    (CVE-2026-0967)

    It was discovered that the libssh SFTP client incorrectly handled certain malformed longname fields. A     remote attacker could use this issue to cause libssh SFTP clients to crash, resulting in a denial of     service, or possibly execute arbitrary code. (CVE-2026-0968)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Detections

Analytics

Ubuntu 22.04 LTS / 24.04 LTS / 25.10 : libssh vulnerabilities (USN-8051-1)

medium Nessus Plugin ID 299636

Version 1.4