{"id":"CVE-2021-47961","aliases":["EUVD-2021-34779","GHSA-2jcx-2m59-6cv8"],"status":"published","title":"A plaintext storage of a password vulnerability in Synology SSL VPN Client before 1.4.5-0684...","description":"A plaintext storage of a password vulnerability in Synology SSL VPN Client before 1.4.5-0684 allows remote attackers to access or influence the user's PIN code due to insecure storage. This may lead to unauthorized VPN configuration and potential interception of subsequent VPN traffic when combined with user interaction.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00328,"percentile":0.26264,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-256"],"published":"2026-04-10T09:22:37Z","modified":"2026-06-17T04:18:50Z","products":[{"vendor":"synology","product":"ssl_vpn_client"},{"vendor":"synology","product":"synology ssl vpn client"}],"references":[{"url":"https://www.synology.com/en-global/security/advisory/Synology_SA_26_05","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-47961"},{"url":"https://github.com/advisories/GHSA-2jcx-2m59-6cv8"}],"sources":{"cve":[{"id":"CVE-2021-47961","description":"A plaintext storage of a password vulnerability in Synology SSL VPN Client before 1.4.5-0684 allows remote attackers to access or influence the user's PIN code due to insecure storage. This may lead to unauthorized VPN configuration and potential interception of subsequent VPN traffic when combined with user interaction.","status":"published","published":"2026-04-10T09:22:37.522Z","modified":"2026-04-10T12:42:56.656Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-256"],"updated_at":"2026-11-02T14:32:56.308189Z"}],"euvd":[{"id":"EUVD-2021-34779","description":"A plaintext storage of a password vulnerability in Synology SSL VPN Client before 1.4.5-0684 allows remote attackers to access or influence the user's PIN code due to insecure storage. This may lead to unauthorized VPN configuration and potential interception of subsequent VPN traffic when combined with user interaction.","status":"published","published":"2026-04-10T09:22:37Z","modified":"2026-04-10T12:42:56Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T19:24:30.341772Z"}],"ghsa":[{"id":"GHSA-2jcx-2m59-6cv8","title":"A plaintext storage of a password vulnerability in Synology SSL VPN Client before 1.4.5-0684...","description":"A plaintext storage of a password vulnerability in Synology SSL VPN Client before 1.4.5-0684 allows remote attackers to access or influence the user's PIN code due to insecure storage. This may lead to unauthorized VPN configuration and potential interception of subsequent VPN traffic when combined with user interaction.","status":"published","published":"2026-04-10T12:31:44Z","modified":"2026-04-10T12:31:49Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-256"],"updated_at":"2026-11-02T15:07:24.880377Z"}],"nvd":[{"id":"CVE-2021-47961","description":"A plaintext storage of a password vulnerability in Synology SSL VPN Client before 1.4.5-0684 allows remote attackers to access or influence the user's PIN code due to insecure storage. This may lead to unauthorized VPN configuration and potential interception of subsequent VPN traffic when combined with user interaction.","status":"published","published":"2026-04-10T10:16:03.913Z","modified":"2026-06-17T04:18:50.197Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-256"],"updated_at":"2026-11-02T14:07:09.005706Z"}]}}