{"id":"CVE-2026-2738","aliases":["EUVD-2026-8311","GHSA-4jg5-735x-q4x2"],"status":"published","title":"Buffer overflow in ovpn‑dco‑win version 2.8.0 allows local attackers to cause a system crash by...","description":"Buffer overflow in ovpn‑dco‑win version 2.8.0 allows local attackers to cause a system crash by sending too large packets to the remote peer when the AEAD tag appears at the end of the encrypted packet","severity":{"version":"4.0","score":5.6,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:P","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00134,"percentile":0.02941,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-131"],"published":"2026-02-19T20:00:30Z","modified":"2026-10-28T02:30:53Z","products":[{"vendor":"openvpn","product":"ovpn-dco-win"}],"references":[{"url":"https://community.openvpn.net/Security%20Announcements/CVE-2026-2738","tags":["vendor-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-2738","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-4jg5-735x-q4x2"},{"url":"https://github.com/OpenVPN/ovpn-dco-win/","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/2xxx/CVE-2026-2738.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-2738","description":"Buffer overflow in ovpn‑dco‑win version 2.8.0 allows local attackers to cause a system crash by sending too large packets to the remote peer when the AEAD tag appears at the end of the encrypted packet","status":"published","published":"2026-02-19T20:00:30.951Z","modified":"2026-02-20T20:00:31.699Z","cvss":[{"version":"4.0","score":5.6,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:P","level":"medium","assessor":"cna"}],"cwes":["CWE-131"],"updated_at":"2026-11-02T13:48:58.05327Z"}],"euvd":[{"id":"EUVD-2026-8311","description":"Buffer overflow in ovpn‑dco‑win version 2.8.0 allows local attackers to cause a system crash by sending too large packets to the remote peer when the AEAD tag appears at the end of the encrypted packet","status":"published","published":"2026-02-19T20:00:30Z","modified":"2026-02-20T20:00:31Z","cvss":[{"version":"4.0","score":5.6,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:P","level":"medium"}],"updated_at":"2026-11-02T19:48:36.125178Z"}],"ghsa":[{"id":"GHSA-4jg5-735x-q4x2","title":"Buffer overflow in ovpn‑dco‑win version 2.8.0 allows local attackers to cause a system crash by...","description":"Buffer overflow in ovpn‑dco‑win version 2.8.0 allows local attackers to cause a system crash by sending too large packets to the remote peer when the AEAD tag appears at the end of the encrypted packet","status":"published","published":"2026-02-19T21:30:48Z","modified":"2026-02-19T21:30:57Z","cvss":[{"version":"4.0","score":5.6,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:P/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","level":"medium"}],"cwes":["CWE-131"],"updated_at":"2026-11-02T15:06:16.865747Z"}],"nvd":[{"id":"CVE-2026-2738","description":"Buffer overflow in ovpn‑dco‑win version 2.8.0 allows local attackers to cause a system crash by sending too large packets to the remote peer when the AEAD tag appears at the end of the encrypted packet","status":"published","published":"2026-02-19T21:18:33.773Z","modified":"2026-06-17T10:31:37.897Z","cvss":[{"version":"4.0","score":5.6,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:P/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","level":"medium","assessor":"secondary"}],"cwes":["CWE-131"],"updated_at":"2026-11-02T14:12:06.274729Z"}],"osv":[{"id":"CVE-2026-2738","description":"Buffer overflow in ovpn‑dco‑win version 2.8.0 allows local attackers to cause a system crash by sending too large packets to the remote peer when the AEAD tag appears at the end of the encrypted packet","status":"published","published":"2026-02-19T20:00:30.951Z","modified":"2026-10-28T02:30:53.98625822Z","cvss":[{"version":"4.0","score":5.6,"vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:P","level":"medium"}],"cwes":["CWE-131"],"updated_at":"2026-11-02T15:45:00.180685Z"}]}}