{"id":"CVE-2021-40154","aliases":["EUVD-2021-27339","GHSA-f88h-2xxc-h4r4"],"status":"published","title":"NXP LPC55S69 devices before A3 have a buffer over-read via a crafted wlength value in a GET...","description":"NXP LPC55S69 devices before A3 have a buffer over-read via a crafted wlength value in a GET Descriptor Configuration request during use of USB In-System Programming (ISP) mode. This discloses protected flash memory.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AC:L/AV:L/A:L/C:H/I:N/PR:L/S:U/UI:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00772,"percentile":0.56133,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-125"],"published":"2021-12-01T14:50:48Z","modified":"2026-06-17T04:06:36Z","exploits":[{"source":"pocgithub","id":"Jeromeyoung/CVE-2021-40154","title":"Jeromeyoung/CVE-2021-40154","date":"2021-11-24","url":"https://github.com/Jeromeyoung/CVE-2021-40154"}],"products":[{"vendor":"nxp","product":"lpc55s69jbd100_firmware"},{"vendor":"nxp","product":"lpc55s69jbd64_firmware"},{"vendor":"nxp","product":"lpc55s69jev98_firmware"}],"references":[{"url":"https://www.darkmatter.ae/xen1thlabs/published-advisories/","tags":["x_refsource_MISC","x_transferred","Broken Link","Third Party Advisory"]},{"url":"https://github.com/Xen1thLabs-AE/CVE-2021-40154","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-40154"},{"url":"https://github.com/advisories/GHSA-f88h-2xxc-h4r4"}],"sources":{"cve":[{"id":"CVE-2021-40154","description":"NXP LPC55S69 devices before A3 have a buffer over-read via a crafted wlength value in a GET Descriptor Configuration request during use of USB In-System Programming (ISP) mode. This discloses protected flash memory.","status":"published","published":"2021-12-01T14:50:48Z","modified":"2024-08-04T02:27:31.524Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AC:L/AV:L/A:L/C:H/I:N/PR:L/S:U/UI:N","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:33:01.495293Z"}],"euvd":[{"id":"EUVD-2021-27339","description":"NXP LPC55S69 devices before A3 have a buffer over-read via a crafted wlength value in a GET Descriptor Configuration request during use of USB In-System Programming (ISP) mode. This discloses protected flash memory.","status":"published","published":"2021-12-01T14:50:48Z","modified":"2024-08-04T02:27:31Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AC:L/AV:L/A:L/C:H/I:N/PR:L/S:U/UI:N","level":"medium"}],"updated_at":"2026-11-03T03:24:21.368958Z"}],"ghsa":[{"id":"GHSA-f88h-2xxc-h4r4","title":"NXP LPC55S69 devices before A3 have a buffer over-read via a crafted wlength value in a GET...","description":"NXP LPC55S69 devices before A3 have a buffer over-read via a crafted wlength value in a GET Descriptor Configuration request during use of USB In-System Programming (ISP) mode. This discloses protected flash memory.","status":"published","published":"2021-12-02T00:00:38Z","modified":"2023-02-01T05:06:26Z","cwes":["CWE-125"],"updated_at":"2026-11-02T14:50:21.264393Z"}],"nvd":[{"id":"CVE-2021-40154","description":"NXP LPC55S69 devices before A3 have a buffer over-read via a crafted wlength value in a GET Descriptor Configuration request during use of USB In-System Programming (ISP) mode. This discloses protected flash memory.","status":"published","published":"2021-12-01T15:15:07.603Z","modified":"2026-06-17T04:06:36.19Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:07:01.811115Z"}]}}