{"api_version":"1","generated_at":"2026-05-11T10:03:43+00:00","cve":"CVE-2023-22308","urls":{"html":"https://cve.report/CVE-2023-22308","api":"https://cve.report/api/cve/CVE-2023-22308.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-22308","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-22308"},"summary":{"title":"CVE-2023-22308","description":"An integer underflow vulnerability exists in the vpnserver OvsProcessData functionality of SoftEther VPN 5.01.9674 and 5.02. A specially crafted network packet can lead to denial of service. An attacker can send a malicious packet to trigger this vulnerability.","state":"PUBLIC","assigner":"talos-cna@cisco.com","published_at":"2023-10-12 16:15:00","updated_at":"2023-10-18 02:43:00"},"problem_types":["CWE-191"],"metrics":[],"references":[{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2023-1737","name":"https://talosintelligence.com/vulnerability_reports/TALOS-2023-1737","refsource":"MISC","tags":[],"title":"TALOS-2023-1737 ||  Cisco Talos Intelligence Group - Comprehensive Threat Intelligence","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-22308","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-22308","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2023","cve_id":"22308","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"softether","cpe5":"vpn","cpe6":"5.01.9674","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"22308","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"softether","cpe5":"vpn","cpe6":"5.02","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"data_version":"4.0","data_type":"CVE","data_format":"MITRE","CVE_data_meta":{"ID":"CVE-2023-22308","ASSIGNER":"talos-cna@cisco.com","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","value":"An integer underflow vulnerability exists in the vpnserver OvsProcessData functionality of SoftEther VPN 5.01.9674 and 5.02. A specially crafted network packet can lead to denial of service. An attacker can send a malicious packet to trigger this vulnerability."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-191: Integer Underflow (Wrap or Wraparound)","cweId":"CWE-191"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"SoftEther VPN","product":{"product_data":[{"product_name":"SoftEther VPN","version":{"version_data":[{"version_affected":"=","version_value":"5.01.9674"},{"version_affected":"=","version_value":"5.02"}]}}]}}]}},"references":{"reference_data":[{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2023-1737","refsource":"MISC","name":"https://talosintelligence.com/vulnerability_reports/TALOS-2023-1737"}]},"credits":[{"lang":"en","value":"Discovered by Lilith &gt;_&gt; of Cisco Talos."}],"impact":{"cvss":[{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH"}]}},"nvd":{"publishedDate":"2023-10-12 16:15:00","lastModifiedDate":"2023-10-18 02:43:00","problem_types":["CWE-191"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:softether:vpn:5.02:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:softether:vpn:5.01.9674:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}