High severity7.5NVD Advisory· Published Feb 3, 2022· Updated Aug 11, 2026

CVE-2021-43522

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Insyde/InsydeH2O2 versions
cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*range: >=5.1,<5.14.34
- (no CPE)range: <=2021-11-08
Insyde/InsydeH2Odescription

Patches

Vulnerability mechanics

References

cert-portal.siemens.com/productcert/pdf/ssa-306654.pdfnvdThird Party Advisory
security.netapp.com/advisory/ntap-20220216-0003/nvdThird Party Advisory
www.insyde.com/security-pledgenvdVendor Advisory
cert-portal.siemens.com/productcert/html/ssa-306654.htmlnvd
www.kb.cert.org/vuls/id/796611nvd

News mentions

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