{"id":"CVE-2026-63089","aliases":[],"cve":{"records":[{"id":"CVE-2026-63089","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-07-15T15:45:44.600Z","published":"2026-07-16T19:28:37.500Z","modified":"2026-11-08T14:07:38.266Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-11-08T14:07:38.266Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-07-18T03:08:24.596Z"}],"references":[{"url":"https://github.com/wg-easy/wg-easy/pull/2661","tags":["issue-tracking","patch"],"source":"VulnCheck"},{"url":"https://github.com/wg-easy/wg-easy/commit/66b292b11bde3664f05ffb016c8082665d261ded","tags":["patch"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/wireguard-easy-weak-token-generation-information-disclosure-via-otl-route","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-338","description":"Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)","source":"VulnCheck"},{"id":"CWE-613","description":"Insufficient Session Expiration","source":"VulnCheck"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-07-18T03:08:14.656482Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"yes"},{"name":"Technical Impact","value":"partial"}]}]},"title":"WireGuard Easy Weak Token Generation Information Disclosure via OTL Route","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"WireGuard Easy through 15.3.0, fixed in commit 66b292b, contains a cryptographically weak one-time link token generation vulnerability that allows unauthenticated network attackers to recover WireGuard peer credentials by brute-forcing a keyspace of at most 1000 candidate tokens per client ID, as the token is computed using CRC32 over a random value constrained to 0-999. Attackers can enumerate candidate tokens against the unauthenticated /cnf/:oneTimeLink route, which lacks rate limiting and does not validate token expiration, to obtain a peer's PrivateKey and PresharedKey and impersonate that peer on the VPN network.","score":9.3,"severity":"critical","published":"2026-07-16T19:28:37.500Z","modified":"2026-11-08T14:07:38.266Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"wg-easy","name":"wg-easy","platforms":[],"versions":[{"version":"0","status":"affected","lessThanOrEqual":"15.3.0","versionType":"semver"},{"version":"66b292b11bde3664f05ffb016c8082665d261ded","status":"unaffected","versionType":"git"}],"defaultStatus":"affected","cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-63089"}],"remediation":[],"references":["https://github.com/wg-easy/wg-easy/pull/2661","https://github.com/wg-easy/wg-easy/commit/66b292b11bde3664f05ffb016c8082665d261ded","https://www.vulncheck.com/advisories/wireguard-easy-weak-token-generation-information-disclosure-via-otl-route"],"sources":[{"name":"CVE","id":"CVE-2026-63089","modified":"2026-11-08T14:07:38.266Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-63089"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:L/SA:N","score":9},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N","score":9.3}],"sourceAffected":[],"observedAt":"2026-11-08T14:28:54.418Z","kev":{"status":"not-listed","checkedAt":"2026-11-14T23:00:32.916Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-08T17:50:31.547Z","attemptedAt":"2026-11-08T17:50:31.547Z"},{"source":"GHSA","status":"available","checkedAt":"2026-11-08T17:50:31.547Z","attemptedAt":"2026-11-08T17:50:31.547Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-08T17:50:31.545Z","attemptedAt":"2026-11-08T17:50:31.545Z"},{"source":"EPSS","status":"available","checkedAt":"2026-11-08T17:50:31.535Z","attemptedAt":"2026-11-08T17:50:31.535Z"}],"evidence":[{"source":"FIRST EPSS","id":"CVE-2026-63089","url":"https://www.first.org/epss/","probability":0.00414,"percentile":0.36007,"date":"2026-11-08","checkedAt":"2026-11-08T17:50:31.535Z"},{"source":"ENISA EUVD","id":"EUVD-2026-45013","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-45013","modified":"Nov 8, 2026, 2:07:38 PM","score":9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:L/SA:N","checkedAt":"2026-11-08T17:50:31.545Z"},{"source":"NVD","id":"CVE-2026-63089","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63089","modified":"2026-07-18T03:16:37.597","score":9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","checkedAt":"2026-11-08T17:50:31.547Z"},{"source":"NVD","id":"CVE-2026-63089","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63089","modified":"2026-07-18T03:16:37.597","score":9.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N","checkedAt":"2026-11-08T17:50:31.547Z"},{"source":"GitHub Advisory Database","id":"GHSA-m894-wgpg-hwpv","url":"https://github.com/advisories/GHSA-m894-wgpg-hwpv","modified":"2026-07-16T21:30:46Z","score":9.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N","checkedAt":"2026-11-08T17:50:31.547Z"}],"aiSummary":{"text":"WireGuard Easy through 15.3.0 has a weak one-time link token generation vulnerability, allowing unauthenticated network attackers to recover peer credentials by brute-forcing a limited keyspace. The token is computed using CRC32 over a constrained random value. Attackers can exploit the unauthenticated /cnf/:oneTimeLink route to obtain a peer's PrivateKey and PresharedKey.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-08T15:06:11.445Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-63089"}]}}