{"id":"CVE-2026-13122","state":"PUBLISHED","title":"OpenVPN version 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote attackers to cause a denial of service via a malformed authentication token that triggers a reachabl","description":"OpenVPN version 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote attackers to cause a denial of service via a malformed authentication token that triggers a reachable assertion when external-auth is enabled","publishedAt":"2026-07-06T14:32:29.371Z","updatedAt":"2026-07-06T15:51:50.731Z","severity":{"score":5.9,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","source":"OpenVPN"},"assigner":"OpenVPN","products":["Openvpn OpenVPN"],"affected":[{"vendor":"Openvpn","product":"OpenVPN","defaultStatus":"unaffected","versions":[{"version":"2.6.0","status":"affected","lessThanOrEqual":"2.6.20","versionType":"semver"},{"version":"2.7_alpha1","status":"affected","lessThanOrEqual":"2.7.4","versionType":"semver"}]}],"references":["https://community.openvpn.net/Security%20Announcements/CVE-2026-13122"],"weaknesses":["CWE-617"],"ingestedAt":"2026-10-29T20:11:00.674Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/13xxx/CVE-2026-13122.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-13122","state":"PUBLISHED","datePublished":"2026-07-06T14:32:29.371Z","dateUpdated":"2026-07-06T15:51:50.731Z","assignerShortName":"OpenVPN","assignerOrgId":"36a55730-e66d-4d39-8ca6-3c3b3017965e","dateReserved":"2026-06-23T22:11:24.264Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"OpenVPN version 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote attackers to cause a denial of service via a malformed authentication token that triggers a reachable assertion when external-auth is enabled"}],"affected":[{"vendor":"Openvpn","product":"OpenVPN","defaultStatus":"unaffected","versions":[{"version":"2.6.0","status":"affected","lessThanOrEqual":"2.6.20","versionType":"semver"},{"version":"2.7_alpha1","status":"affected","lessThanOrEqual":"2.7.4","versionType":"semver"}]}],"references":[{"url":"https://community.openvpn.net/Security%20Announcements/CVE-2026-13122","tags":["vendor-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"PASSIVE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":5.9,"vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-617","lang":"en","description":"CWE-617  Reachable Assertion","type":"CWE"}]}],"providerMetadata":{"shortName":"OpenVPN","orgId":"36a55730-e66d-4d39-8ca6-3c3b3017965e","dateUpdated":"2026-07-06T14:46:19.369Z"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-06T15:51:45.374719Z","id":"CVE-2026-13122","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-06T15:51:50.731Z"}}]}}}