{
    "id": "CVE-2012-5975",
    "published": "2012-12-04 23:55:00",
    "last_modified": "2026-06-16 23:47:39",
    "cvss_score": "9.3",
    "cvss_severity": "HIGH",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
    "cwe": "CWE-287",
    "description": "The SSH USERAUTH CHANGE REQUEST feature in SSH Tectia Server 6.0.4 through 6.0.20, 6.1.0 through 6.1.12, 6.2.0 through 6.2.5, and 6.3.0 through 6.3.2 on UNIX and Linux, when old-style password authentication is enabled, allows remote attackers to bypass authentication via a crafted session involving entry of blank passwords, as demonstrated by a root login session from a modified OpenSSH client with an added input_userauth_passwd_changereq call in sshconnect2.c.",
    "epss_score": "0.35874",
    "epss_percentile": "0.98421",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-27 18:17:11",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "linux",
            "product": "linux_kernel"
        },
        {
            "vendor": "ssh",
            "product": "tectia_server"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "23156",
            "title": "(SSH.com Communications) SSH Tectia - USERAUTH Change Request Password Reset (Metasploit)",
            "date": "2012-12-05",
            "url": "https://www.exploit-db.com/exploits/23156"
        },
        {
            "source": "exploit-db",
            "ref_id": "23082",
            "title": "(SSH.com Communications) SSH Tectia (SSH < 2.0-6.1.9.95 / Tectia 6.1.9.95) - Remote Authentication Bypass",
            "date": "2012-12-02",
            "url": "https://www.exploit-db.com/exploits/23082"
        }
    ],
    "refs_list": [
        "http://archives.neohapsis.com/archives/fulldisclosure/2012-12/0013.html",
        "http://archives.neohapsis.com/archives/fulldisclosure/2012-12/0065.html",
        "http://www.exploit-db.com/exploits/23082/",
        "https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/unix/ssh/tectia_passwd_changereq.rb",
        "http://archives.neohapsis.com/archives/fulldisclosure/2012-12/0013.html",
        "http://archives.neohapsis.com/archives/fulldisclosure/2012-12/0065.html",
        "http://www.exploit-db.com/exploits/23082/",
        "https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/unix/ssh/tectia_passwd_changereq.rb"
    ]
}