{
"id": "GHSA-f8pw-77pg-8gv6",
"aliases": [
"CVE-2020-5953"
],
"details": "A vulnerability exists in System Management Interrupt (SWSMI) handler of InsydeH2O UEFI Firmware code located in SWSMI handler that dereferences gRT (EFI_RUNTIME_SERVICES) pointer to call a GetVariable service, which is located outside of SMRAM. This can result in code execution in SMM (escalating privilege from ring 0 to ring -2).",
"affected": [],
"modified": "2026-08-11T15:30:31Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H"
}
],
"published": "2022-02-10T00:01:02Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-5953",
"type": "ADVISORY"
},
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-306654.html",
"type": "WEB"
},
{
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf",
"type": "WEB"
},
{
"url": "https://security.netapp.com/advisory/ntap-20220222-0005",
"type": "WEB"
},
{
"url": "https://www.insyde.com/products",
"type": "WEB"
},
{
"url": "https://www.insyde.com/security-pledge",
"type": "WEB"
},
{
"url": "https://www.kb.cert.org/vuls/id/796611",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [],
"severity": "HIGH",
"github_reviewed": false,
"nvd_published_at": "2022-02-03T01:15:00Z",
"github_reviewed_at": null
}
}