{"id":"CVE-2020-4102","aliases":["EUVD-2020-25349","GHSA-qrxp-3jr9-xcc9"],"status":"published","title":"HCL Notes is susceptible to a Buffer Overflow vulnerability in DXL due to improper validation of...","description":"HCL Notes is susceptible to a Buffer Overflow vulnerability in DXL due to improper validation of user input. A successful exploit could enable an attacker to crash Notes or execute attacker-controlled code on the client system.","severity":{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00325,"percentile":0.25736,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2020-12-02T00:56:42Z","modified":"2026-06-17T03:19:33Z","products":[{"vendor":"hcl","product":"hcl notes"},{"vendor":"hcltech","product":"notes"}],"references":[{"url":"https://support.hcltechsw.com/csm?id=kb_article\u0026sysparm_article=KB0085499","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-4102"},{"url":"https://github.com/advisories/GHSA-qrxp-3jr9-xcc9"}],"sources":{"cve":[{"id":"CVE-2020-4102","description":"HCL Notes is susceptible to a Buffer Overflow vulnerability in DXL due to improper validation of user input. A successful exploit could enable an attacker to crash Notes or execute attacker-controlled code on the client system.","status":"published","published":"2020-12-02T00:56:42Z","modified":"2024-08-04T07:52:20.914Z","updated_at":"2026-11-02T14:35:55.797746Z"}],"euvd":[{"id":"EUVD-2020-25349","description":"HCL Notes is susceptible to a Buffer Overflow vulnerability in DXL due to improper validation of user input. A successful exploit could enable an attacker to crash Notes or execute attacker-controlled code on the client system.","status":"published","published":"2020-12-02T00:56:42Z","modified":"2024-08-04T07:52:20Z","updated_at":"2026-11-03T03:08:07.872525Z"}],"ghsa":[{"id":"GHSA-qrxp-3jr9-xcc9","title":"HCL Notes is susceptible to a Buffer Overflow vulnerability in DXL due to improper validation of...","description":"HCL Notes is susceptible to a Buffer Overflow vulnerability in DXL due to improper validation of user input. A successful exploit could enable an attacker to crash Notes or execute attacker-controlled code on the client system.","status":"published","published":"2022-05-24T17:35:18Z","modified":"2023-01-29T05:04:54Z","cwes":["CWE-120"],"updated_at":"2026-11-02T14:45:39.783328Z"}],"nvd":[{"id":"CVE-2020-4102","description":"HCL Notes is susceptible to a Buffer Overflow vulnerability in DXL due to improper validation of user input. A successful exploit could enable an attacker to crash Notes or execute attacker-controlled code on the client system.","status":"published","published":"2020-12-02T01:15:12.903Z","modified":"2026-06-17T03:19:33.387Z","cvss":[{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:06:25.394006Z"}]}}