{"id":"CVE-2020-14258","aliases":["EUVD-2020-6411","GHSA-xjww-8m9x-vvj8"],"status":"published","title":"HCL Notes is susceptible to a Denial of Service vulnerability caused by improper validation of...","description":"HCL Notes is susceptible to a Denial of Service vulnerability caused by improper validation of user-supplied input. A remote unauthenticated attacker could exploit this vulnerability using a specially-crafted email message to hang the client. Versions 9, 10 and 11 are affected.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01262,"percentile":0.69901,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2020-11-21T17:24:31Z","modified":"2026-06-17T02:54:27Z","products":[{"vendor":"hcl","product":"hcl notes"},{"vendor":"hcltech","product":"notes"}],"references":[{"url":"https://support.hcltechsw.com/csm?id=kb_article\u0026sysparm_article=KB0085304","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-14258"},{"url":"https://github.com/advisories/GHSA-xjww-8m9x-vvj8"}],"sources":{"cve":[{"id":"CVE-2020-14258","description":"HCL Notes is susceptible to a Denial of Service vulnerability caused by improper validation of user-supplied input. A remote unauthenticated attacker could exploit this vulnerability using a specially-crafted email message to hang the client. Versions 9, 10 and 11 are affected.","status":"published","published":"2020-11-21T17:24:31Z","modified":"2024-08-04T12:39:36.207Z","updated_at":"2026-11-02T14:35:46.476719Z"}],"euvd":[{"id":"EUVD-2020-6411","description":"HCL Notes is susceptible to a Denial of Service vulnerability caused by improper validation of user-supplied input. A remote unauthenticated attacker could exploit this vulnerability using a specially-crafted email message to hang the client. Versions 9, 10 and 11 are affected.","status":"published","published":"2020-11-21T17:24:31Z","modified":"2024-08-04T12:39:36Z","updated_at":"2026-11-03T03:07:34.636169Z"}],"ghsa":[{"id":"GHSA-xjww-8m9x-vvj8","title":"HCL Notes is susceptible to a Denial of Service vulnerability caused by improper validation of...","description":"HCL Notes is susceptible to a Denial of Service vulnerability caused by improper validation of user-supplied input. A remote unauthenticated attacker could exploit this vulnerability using a specially-crafted email message to hang the client. Versions 9, 10 and 11 are affected.","status":"published","published":"2022-05-24T17:34:37Z","modified":"2023-01-29T05:04:49Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:45:38.830072Z"}],"nvd":[{"id":"CVE-2020-14258","description":"HCL Notes is susceptible to a Denial of Service vulnerability caused by improper validation of user-supplied input. A remote unauthenticated attacker could exploit this vulnerability using a specially-crafted email message to hang the client. Versions 9, 10 and 11 are affected.","status":"published","published":"2020-11-21T18:15:11.743Z","modified":"2026-06-17T02:54:27.617Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:06:25.394006Z"}]}}