{"id":"CVE-2023-27516","aliases":["EUVD-2023-31278","GHSA-cw58-3hpw-976j"],"status":"published","title":"An authentication bypass vulnerability exists in the CiRpcAccepted() functionality of SoftEther...","description":"An authentication bypass vulnerability exists in the CiRpcAccepted() functionality of SoftEther VPN 4.41-9782-beta and 5.01.9674. A specially crafted network packet can lead to unauthorized access. An attacker can send a network request to trigger this vulnerability.","severity":{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.0053,"percentile":0.45292,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1188","CWE-453"],"published":"2023-10-12T15:27:52Z","modified":"2026-06-17T05:45:22Z","products":[{"vendor":"softether","product":"vpn"},{"vendor":"softether vpn","product":"softether vpn"}],"references":[{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2023-1754","tags":["x_transferred","Exploit","Third Party Advisory"]},{"url":"https://www.softether.org/9-about/News/904-SEVPN202301","tags":["x_transferred","Patch","Vendor Advisory"]},{"url":"https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1754"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-27516"},{"url":"https://github.com/advisories/GHSA-cw58-3hpw-976j"}],"sources":{"cve":[{"id":"CVE-2023-27516","description":"An authentication bypass vulnerability exists in the CiRpcAccepted() functionality of SoftEther VPN 4.41-9782-beta and 5.01.9674. A specially crafted network packet can lead to unauthorized access. An attacker can send a network request to trigger this vulnerability.","status":"published","published":"2023-10-12T15:27:52.223Z","modified":"2024-08-02T12:16:36.884Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","level":"high","assessor":"cna"}],"cwes":["CWE-453"],"updated_at":"2026-11-02T14:35:26.63732Z"}],"euvd":[{"id":"EUVD-2023-31278","description":"An authentication bypass vulnerability exists in the CiRpcAccepted() functionality of SoftEther VPN 4.41-9782-beta and 5.01.9674. A specially crafted network packet can lead to unauthorized access. An attacker can send a network request to trigger this vulnerability.","status":"published","published":"2023-10-12T15:27:52Z","modified":"2024-08-02T12:16:36Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","level":"high"}],"updated_at":"2026-11-03T03:50:06.256765Z"}],"ghsa":[{"id":"GHSA-cw58-3hpw-976j","title":"An authentication bypass vulnerability exists in the CiRpcAccepted() functionality of SoftEther...","description":"An authentication bypass vulnerability exists in the CiRpcAccepted() functionality of SoftEther VPN 4.41-9782-beta and 5.01.9674. A specially crafted network packet can lead to unauthorized access. An attacker can send a network request to trigger this vulnerability.","status":"published","published":"2023-10-12T18:30:28Z","modified":"2024-04-04T08:35:53Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","level":"high"}],"cwes":["CWE-453","CWE-1188"],"updated_at":"2026-11-02T14:56:59.652212Z"}],"nvd":[{"id":"CVE-2023-27516","description":"An authentication bypass vulnerability exists in the CiRpcAccepted() functionality of SoftEther VPN 4.41-9782-beta and 5.01.9674. A specially crafted network packet can lead to unauthorized access. An attacker can send a network request to trigger this vulnerability.","status":"published","published":"2023-10-12T16:15:11.67Z","modified":"2026-06-17T05:45:22.517Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","level":"high","assessor":"secondary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-453","CWE-1188"],"updated_at":"2026-11-02T14:08:37.83429Z"}]}}