{"id":"CVE-2021-43614","aliases":["EUVD-2021-34869","GHSA-j24h-m5cw-7785"],"status":"published","title":"VariableEditSmm: Error checking of UEFI variables could cause buffer overflow, leading to code execution","description":"Error in handling the PlatformLangCodes UEFI variable could cause a buffer overflow, leading to resource exhaustion and failure.","severity":{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00151,"percentile":0.04294,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2026-09-03T02:15:34Z","modified":"2026-09-03T18:09:03Z","products":[{"vendor":"insyde software","product":"insydeh2o"}],"references":[{"url":"https://www.insyde.com/security-pledge/sa-2022026/"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43614"},{"url":"https://www.insyde.com/security-pledge/sa-2022026"},{"url":"https://github.com/advisories/GHSA-j24h-m5cw-7785"}],"sources":{"cve":[{"id":"CVE-2021-43614","title":"VariableEditSmm: Error checking of UEFI variables could cause buffer overflow, leading to code execution","description":"Error in handling the PlatformLangCodes UEFI variable could cause a buffer overflow, leading to resource exhaustion and failure.","status":"published","published":"2026-09-03T02:15:34.848Z","modified":"2026-09-03T13:13:33.103Z","cvss":[{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:32:56.689433Z"}],"euvd":[{"id":"EUVD-2021-34869","description":"Error in handling the PlatformLangCodes UEFI variable could cause a buffer overflow, leading to resource exhaustion and failure.","status":"published","published":"2026-09-03T02:15:34Z","modified":"2026-09-03T13:13:33Z","cvss":[{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:L","level":"medium"}],"updated_at":"2026-11-02T18:01:14.198061Z"}],"ghsa":[{"id":"GHSA-j24h-m5cw-7785","title":"Error in handling the PlatformLangCodes UEFI variable could cause a buffer overflow, leading to...","description":"Error in handling the PlatformLangCodes UEFI variable could cause a buffer overflow, leading to resource exhaustion and failure.","status":"published","published":"2026-09-03T15:32:08Z","modified":"2026-09-03T15:32:09Z","cvss":[{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:L","level":"medium"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T15:11:18.49317Z"}],"nvd":[{"id":"CVE-2021-43614","description":"Error in handling the PlatformLangCodes UEFI variable could cause a buffer overflow, leading to resource exhaustion and failure.","status":"published","published":"2026-09-03T13:04:12.283Z","modified":"2026-09-03T18:09:03.317Z","cvss":[{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:07:09.005706Z"}]}}