CVE-2021-43522

An issue was discovered in Insyde InsydeH2O with kernel 5.1 through 2021-11-08, 5.2 through 2021-11-08, and 5.3 through 2021-11-08. A StorageSecurityCommandDxe SMM memory corruption vulnerability allows an attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.

• CWE-787

• https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdfThird Party Advisory
• https://security.netapp.com/advisory/ntap-20220216-0003/Third Party Advisory
• https://www.insyde.com/security-pledgeVendor Advisory
• https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdfThird Party Advisory
• https://security.netapp.com/advisory/ntap-20220216-0003/Third Party Advisory
• https://www.insyde.com/security-pledgeVendor Advisory
• https://www.kb.cert.org/vuls/id/796611
• https://cert-portal.siemens.com/productcert/html/ssa-306654.html

Published

Feb 3, 2022

Last Modified

Aug 11, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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