{"id":"CVE-2023-31247","aliases":["EUVD-2023-35562","GHSA-78q9-mf5f-jj96"],"status":"published","title":"A memory corruption vulnerability exists in the HTTP Server Host header parsing functionality of...","description":"A memory corruption vulnerability exists in the HTTP Server Host header parsing functionality of Weston Embedded uC-HTTP v3.01.01. A specially crafted network packet can lead to code execution. An attacker can send a malicious packet to trigger this vulnerability.","severity":{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01842,"percentile":0.79189,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119","CWE-787"],"published":"2023-11-14T09:14:51Z","modified":"2026-10-28T02:31:11Z","products":[{"vendor":"silabs","product":"gecko_software_development_kit"},{"vendor":"silicon labs","product":"gecko platform"},{"vendor":"weston embedded","product":"cesium net"},{"vendor":"weston embedded","product":"uc-http"},{"vendor":"weston-embedded","product":"cesium_net"},{"vendor":"weston-embedded","product":"uc-http"}],"references":[{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2023-1746","tags":["x_transferred","Exploit","Technical Description","Third Party Advisory","web"]},{"url":"https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1746","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-31247","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-78q9-mf5f-jj96"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/31xxx/CVE-2023-31247.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-31247","description":"A memory corruption vulnerability exists in the HTTP Server Host header parsing functionality of Weston Embedded uC-HTTP v3.01.01. A specially crafted network packet can lead to code execution. An attacker can send a malicious packet to trigger this vulnerability.","status":"published","published":"2023-11-14T09:14:51.588Z","modified":"2025-11-04T19:16:00.398Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:35:27.430605Z"}],"euvd":[{"id":"EUVD-2023-35562","description":"A memory corruption vulnerability exists in the HTTP Server Host header parsing functionality of Weston Embedded uC-HTTP v3.01.01. A specially crafted network packet can lead to code execution. An attacker can send a malicious packet to trigger this vulnerability.","status":"published","published":"2023-11-14T09:14:51Z","modified":"2025-11-04T19:16:00Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T19:49:22.827048Z"}],"ghsa":[{"id":"GHSA-78q9-mf5f-jj96","title":"A memory corruption vulnerability exists in the HTTP Server Host header parsing functionality of...","description":"A memory corruption vulnerability exists in the HTTP Server Host header parsing functionality of Weston Embedded uC-HTTP v3.01.01. A specially crafted network packet can lead to code execution. An attacker can send a malicious packet to trigger this vulnerability.","status":"published","published":"2023-11-14T12:30:26Z","modified":"2025-11-04T21:30:47Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-119","CWE-787"],"updated_at":"2026-11-02T15:04:36.009389Z"}],"nvd":[{"id":"CVE-2023-31247","description":"A memory corruption vulnerability exists in the HTTP Server Host header parsing functionality of Weston Embedded uC-HTTP v3.01.01. A specially crafted network packet can lead to code execution. An attacker can send a malicious packet to trigger this vulnerability.","status":"published","published":"2023-11-14T10:15:28.393Z","modified":"2026-06-17T05:56:40.557Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-119","CWE-787"],"updated_at":"2026-11-02T14:08:46.647045Z"}],"osv":[{"id":"CVE-2023-31247","description":"A memory corruption vulnerability exists in the HTTP Server Host header parsing functionality of Weston Embedded uC-HTTP v3.01.01. A specially crafted network packet can lead to code execution. An attacker can send a malicious packet to trigger this vulnerability.","status":"published","published":"2023-11-14T09:14:51.588Z","modified":"2026-10-28T02:31:11.355342549Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T15:44:31.790231Z"}]}}