{"id":"CVE-2023-23581","aliases":["EUVD-2023-27681","GHSA-9h4p-65h5-f3vx"],"status":"published","title":"A denial-of-service vulnerability exists in the vpnserver EnSafeHttpHeaderValueStr functionality...","description":"A denial-of-service vulnerability exists in the vpnserver EnSafeHttpHeaderValueStr functionality of SoftEther VPN 5.01.9674 and 5.02. A specially crafted network packet can lead to denial of service.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00841,"percentile":0.58331,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2023-10-12T15:27:53Z","modified":"2026-06-17T05:37:30Z","products":[{"vendor":"softether","product":"vpn"},{"vendor":"softether vpn","product":"softether vpn"}],"references":[{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2023-1741","tags":["x_transferred","Exploit","Third Party Advisory"]},{"url":"https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1741"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-23581"},{"url":"https://github.com/advisories/GHSA-9h4p-65h5-f3vx"}],"sources":{"cve":[{"id":"CVE-2023-23581","description":"A denial-of-service vulnerability exists in the vpnserver EnSafeHttpHeaderValueStr functionality of SoftEther VPN 5.01.9674 and 5.02. A specially crafted network packet can lead to denial of service.","status":"published","published":"2023-10-12T15:27:53.612Z","modified":"2024-08-02T10:35:33.372Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:35:20.812737Z"}],"euvd":[{"id":"EUVD-2023-27681","description":"A denial-of-service vulnerability exists in the vpnserver EnSafeHttpHeaderValueStr functionality of SoftEther VPN 5.01.9674 and 5.02. A specially crafted network packet can lead to denial of service.","status":"published","published":"2023-10-12T15:27:53Z","modified":"2024-08-02T10:35:33Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T03:50:07.32318Z"}],"ghsa":[{"id":"GHSA-9h4p-65h5-f3vx","title":"A denial-of-service vulnerability exists in the vpnserver EnSafeHttpHeaderValueStr functionality...","description":"A denial-of-service vulnerability exists in the vpnserver EnSafeHttpHeaderValueStr functionality of SoftEther VPN 5.01.9674 and 5.02. A specially crafted network packet can lead to denial of service.","status":"published","published":"2023-10-12T18:30:28Z","modified":"2024-04-04T08:35:49Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:56:59.652212Z"}],"nvd":[{"id":"CVE-2023-23581","description":"A denial-of-service vulnerability exists in the vpnserver EnSafeHttpHeaderValueStr functionality of SoftEther VPN 5.01.9674 and 5.02. A specially crafted network packet can lead to denial of service.","status":"published","published":"2023-10-12T16:15:10.937Z","modified":"2026-06-17T05:37:30.04Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:08:37.83429Z"}]}}