{"id":"CVE-2021-26943","aliases":["EUVD-2021-13725","GHSA-mjx5-gc25-3cxf"],"status":"published","title":"The UX360CA BIOS through 303 on ASUS laptops allow an attacker (with the ring 0 privilege) to...","description":"The UX360CA BIOS through 303 on ASUS laptops allow an attacker (with the ring 0 privilege) to overwrite nearly arbitrary physical memory locations, including SMRAM, and execute arbitrary code in the SMM (issue 3 of 3).","severity":{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00937,"percentile":0.61287,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"2021-03-31T19:26:31Z","modified":"2026-06-17T03:44:03Z","exploits":[{"source":"pocgithub","id":"tandasat/SmmExploit","title":"tandasat/SmmExploit","date":"2020-12-31","url":"https://github.com/tandasat/SmmExploit"}],"products":[{"vendor":"asus","product":"ux360ca_bios"}],"references":[{"url":"https://www.asus.com/support/FAQ/1045541/","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Vendor Advisory"]},{"url":"https://www.youtube.com/watch?v=1H3AfaVyeuk","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26943"},{"url":"https://github.com/advisories/GHSA-mjx5-gc25-3cxf"}],"sources":{"cve":[{"id":"CVE-2021-26943","description":"The UX360CA BIOS through 303 on ASUS laptops allow an attacker (with the ring 0 privilege) to overwrite nearly arbitrary physical memory locations, including SMRAM, and execute arbitrary code in the SMM (issue 3 of 3).","status":"published","published":"2021-03-31T19:26:31Z","modified":"2024-08-03T20:33:41.499Z","updated_at":"2026-11-02T14:32:57.368269Z"}],"euvd":[{"id":"EUVD-2021-13725","description":"The UX360CA BIOS through 303 on ASUS laptops allow an attacker (with the ring 0 privilege) to overwrite nearly arbitrary physical memory locations, including SMRAM, and execute arbitrary code in the SMM (issue 3 of 3).","status":"published","published":"2021-03-31T19:26:31Z","modified":"2024-08-03T20:33:41Z","updated_at":"2026-11-03T03:24:50.84326Z"}],"ghsa":[{"id":"GHSA-mjx5-gc25-3cxf","title":"The UX360CA BIOS through 303 on ASUS laptops allow an attacker (with the ring 0 privilege) to...","description":"The UX360CA BIOS through 303 on ASUS laptops allow an attacker (with the ring 0 privilege) to overwrite nearly arbitrary physical memory locations, including SMRAM, and execute arbitrary code in the SMM (issue 3 of 3).","status":"published","published":"2022-05-24T17:46:00Z","modified":"2023-01-29T05:06:12Z","updated_at":"2026-11-02T14:45:58.127346Z"}],"nvd":[{"id":"CVE-2021-26943","description":"The UX360CA BIOS through 303 on ASUS laptops allow an attacker (with the ring 0 privilege) to overwrite nearly arbitrary physical memory locations, including SMRAM, and execute arbitrary code in the SMM (issue 3 of 3).","status":"published","published":"2021-03-31T20:15:14.13Z","modified":"2026-06-17T03:44:03.153Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high","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"}],"updated_at":"2026-11-02T14:06:51.197859Z"}]}}