{"id":"CVE-2022-4020","aliases":["EUVD-2022-51399","GHSA-42r4-ffjv-m633"],"status":"published","title":"Acer Aspire BIOS vulnerability","description":"Vulnerability in the HQSwSmiDxe DXE driver on some consumer Acer Notebook devices may allow an attacker with elevated privileges to modify UEFI Secure Boot settings by modifying an NVRAM variable.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00248,"percentile":0.16228,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-276"],"published":"2022-11-28T13:00:01Z","modified":"2026-06-17T05:19:46Z","products":[{"vendor":"acer","product":"aspire a115-21"},{"vendor":"acer","product":"aspire a315-22"},{"vendor":"acer","product":"aspire a315-22g"},{"vendor":"acer","product":"aspire_a115-21_firmware"},{"vendor":"acer","product":"aspire_a315-22_firmware"},{"vendor":"acer","product":"aspire_a315-22g_firmware"},{"vendor":"acer","product":"extensa ex215-21"},{"vendor":"acer","product":"extensa ex215-21g"},{"vendor":"acer","product":"extensa_ex215-21_firmware"},{"vendor":"acer","product":"extensa_ex215-21g_firmware"}],"references":[{"url":"https://community.acer.com/en/kb/articles/15520-security-vulnerability-regarding-vulnerability-that-may-allow-changes-to-secure-boot-settings","tags":["x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-4020"},{"url":"https://github.com/advisories/GHSA-42r4-ffjv-m633"}],"sources":{"cve":[{"id":"CVE-2022-4020","title":"Acer Aspire BIOS vulnerability","description":"Vulnerability in the HQSwSmiDxe DXE driver on some consumer Acer Notebook devices may allow an attacker with elevated privileges to modify UEFI Secure Boot settings by modifying an NVRAM variable.\n\n\n","status":"published","published":"2022-11-28T13:00:01.057Z","modified":"2025-04-14T18:16:59.908Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-276"],"updated_at":"2026-11-02T14:34:37.932195Z"}],"euvd":[{"id":"EUVD-2022-51399","description":"Vulnerability in the HQSwSmiDxe DXE driver on some consumer Acer Notebook devices may allow an attacker with elevated privileges to modify UEFI Secure Boot settings by modifying an NVRAM variable.\n\n\n","status":"published","published":"2022-11-28T13:00:01Z","modified":"2025-04-14T18:16:59Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T20:52:33.06705Z"}],"ghsa":[{"id":"GHSA-42r4-ffjv-m633","title":"Vulnerability in the HQSwSmiDxe DXE driver on some consumer Acer Notebook devices may allow an...","description":"Vulnerability in the HQSwSmiDxe DXE driver on some consumer Acer Notebook devices may allow an attacker with elevated privileges to modify UEFI Secure Boot settings by modifying an NVRAM variable.","status":"published","published":"2022-11-28T15:30:24Z","modified":"2023-01-27T05:01:58Z","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"}],"cwes":["CWE-276"],"updated_at":"2026-11-02T14:41:59.85242Z"}],"nvd":[{"id":"CVE-2022-4020","description":"Vulnerability in the HQSwSmiDxe DXE driver on some consumer Acer Notebook devices may allow an attacker with elevated privileges to modify UEFI Secure Boot settings by modifying an NVRAM variable.\n\n\n","status":"published","published":"2022-11-28T13:15:10.18Z","modified":"2026-06-17T05:19:46.683Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H","level":"high","assessor":"secondary"},{"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"}],"cwes":["CWE-276"],"updated_at":"2026-11-02T14:07:32.827264Z"}]}}