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CVE-2020-5953
Published: Feb 3, 2022
Modified: Nov 4, 2025
PUBLISHED
Description
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).
| Vendor | Product | Versions |
|---|---|---|
n/a | n/a | affected n/a |
References
https://www.insyde.com/products
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https://www.insyde.com/security-pledge
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https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf
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https://security.netapp.com/advisory/ntap-20220222-0005/
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