{"id":"CVE-2009-3525","aliases":["EUVD-2009-3507","GHSA-8xjx-475c-5hjg","RHSA-2009:1472"],"status":"published","title":"The pyGrub boot loader in Xen 3.0.3, 3.3.0, and Xen-3.3.1 does not support the password option in...","description":"The pyGrub boot loader in Xen 3.0.3, 3.3.0, and Xen-3.3.1 does not support the password option in grub.conf for para-virtualized guests, which allows attackers with access to the para-virtualized guest console to boot the guest or modify the guest's kernel boot parameters without providing the expected password.","severity":{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.0124,"percentile":0.69339,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-264"],"published":"2009-10-05T19:00:00Z","modified":"2026-06-26T12:19:24Z","exploits":[{"source":"exploitdb","id":"EDB-33255","title":"Xen 3.x - pygrub Local Authentication Bypass","type":"local","platform":"linux","date":"2009-09-25","verified":true,"url":"https://www.exploit-db.com/exploits/33255"}],"fixes":[{"ecosystem":"Red Hat:rhel_virtualization:5::client","package":"xen","fixed_in":["0:3.0.3-94.el5_4.1"],"sources":["osv"]},{"ecosystem":"Red Hat:rhel_virtualization:5::client","package":"xen-debuginfo","fixed_in":["0:3.0.3-94.el5_4.1"],"sources":["osv"]},{"ecosystem":"Red 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pyGrub boot loader in Xen 3.0.3, 3.3.0, and Xen-3.3.1 does not support the password option in grub.conf for para-virtualized guests, which allows attackers with access to the para-virtualized guest console to boot the guest or modify the guest's kernel boot parameters without providing the expected password.","status":"published","published":"2009-10-05T19:00:00Z","modified":"2024-08-07T06:31:10.518Z","updated_at":"2026-11-02T14:33:23.749891Z"}],"euvd":[{"id":"EUVD-2009-3507","description":"The pyGrub boot loader in Xen 3.0.3, 3.3.0, and Xen-3.3.1 does not support the password option in grub.conf for para-virtualized guests, which allows attackers with access to the para-virtualized guest console to boot the guest or modify the guest's kernel boot parameters without providing the expected password.","status":"published","published":"2009-10-05T19:00:00Z","modified":"2024-08-07T06:31:10Z","updated_at":"2026-11-03T01:39:13.693198Z"}],"ghsa":[{"id":"GHSA-8xjx-475c-5hjg","title":"The pyGrub boot loader in Xen 3.0.3, 3.3.0, and Xen-3.3.1 does not support the password option in...","description":"The pyGrub boot loader in Xen 3.0.3, 3.3.0, and Xen-3.3.1 does not support the password option in grub.conf for para-virtualized guests, which allows attackers with access to the para-virtualized guest console to boot the guest or modify the guest's kernel boot parameters without providing the expected password.","status":"published","published":"2022-05-02T03:45:58Z","modified":"2023-01-31T05:08:21Z","updated_at":"2026-11-02T14:49:22.824157Z"}],"nvd":[{"id":"CVE-2009-3525","description":"The pyGrub boot loader in Xen 3.0.3, 3.3.0, and Xen-3.3.1 does not support the password option in grub.conf for para-virtualized guests, which allows attackers with access to the para-virtualized guest console to boot the guest or modify the guest's kernel boot parameters without providing the expected password.","status":"published","published":"2009-10-05T19:30:00.28Z","modified":"2026-06-16T23:11:46.733Z","cvss":[{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-264"],"updated_at":"2026-11-02T14:01:37.004244Z"}],"osv":[{"id":"RHSA-2009:1472","title":"Red Hat Security Advisory: xen security and bug fix update","status":"published","published":"2024-09-15T18:08:40Z","modified":"2026-06-26T12:19:24.077774401Z","updated_at":"2026-11-02T15:53:00.468834Z"}]}}