{"id":"CVE-2021-1540","aliases":["EUVD-2021-7007","GHSA-f834-hxf4-wmxm"],"status":"published","title":"Cisco ASR 5000 Series Software Authorization Bypass Vulnerabilities","description":"Multiple vulnerabilities in the authorization process of Cisco ASR 5000 Series Software (StarOS) could allow an authenticated, remote attacker to bypass authorization and execute a subset of CLI commands on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01053,"percentile":0.64603,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-863"],"published":"2021-06-04T16:46:02Z","modified":"2026-06-17T03:32:00Z","products":[{"vendor":"cisco","product":"cisco asr 5000 series software"},{"vendor":"cisco","product":"staros"},{"vendor":"cisco","product":"virtualized_packet_core"}],"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asr5k-autho-bypass-mJDF5S7n","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-1540"},{"url":"https://github.com/advisories/GHSA-f834-hxf4-wmxm"}],"sources":{"cve":[{"id":"CVE-2021-1540","title":"Cisco ASR 5000 Series Software Authorization Bypass Vulnerabilities","description":"Multiple vulnerabilities in the authorization process of Cisco ASR 5000 Series Software (StarOS) could allow an authenticated, remote attacker to bypass authorization and execute a subset of CLI commands on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.","status":"published","published":"2021-06-04T16:46:02.739Z","modified":"2024-11-07T22:09:20.18Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:33:08.811269Z"}],"euvd":[{"id":"EUVD-2021-7007","description":"Multiple vulnerabilities in the authorization process of Cisco ASR 5000 Series Software (StarOS) could allow an authenticated, remote attacker to bypass authorization and execute a subset of CLI commands on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.","status":"published","published":"2021-06-04T16:46:02Z","modified":"2024-11-07T22:09:20Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T00:05:06.878478Z"}],"ghsa":[{"id":"GHSA-f834-hxf4-wmxm","title":"Multiple vulnerabilities in the authorization process of Cisco ASR 5000 Series Software (StarOS)...","description":"Multiple vulnerabilities in the authorization process of Cisco ASR 5000 Series Software (StarOS) could allow an authenticated, remote attacker to bypass authorization and execute a subset of CLI commands on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.","status":"published","published":"2022-05-24T19:04:04Z","modified":"2023-01-29T05:07:51Z","cwes":["CWE-863"],"updated_at":"2026-11-02T14:46:11.594724Z"}],"nvd":[{"id":"CVE-2021-1540","description":"Multiple vulnerabilities in the authorization process of Cisco ASR 5000 Series Software (StarOS) could allow an authenticated, remote attacker to bypass authorization and execute a subset of CLI commands on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.","status":"published","published":"2021-06-04T17:15:09.917Z","modified":"2026-06-17T03:32:00.817Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6,"vector":"AV:N/AC:M/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:06:54.439974Z"}]}}