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CVE-2021-33626
Published: Oct 1, 2021
Modified: Nov 4, 2025
PUBLISHED
Description
A vulnerability exists in SMM (System Management Mode) branch that registers a SWSMI handler that does not sufficiently check or validate the allocated buffer pointer(QWORD values for CommBuffer). This can be used by an attacker to corrupt data in SMRAM memory and even lead to arbitrary code execution.
| Vendor | Product | Versions |
|---|---|---|
n/a | n/a | affected n/a |
References
https://www.insyde.com/security-pledge
x_refsource_MISC
https://www.insyde.com/security-pledge/SA-2021001
x_refsource_MISC
https://security.netapp.com/advisory/ntap-20220216-0006/
x_refsource_CONFIRM
https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf
x_refsource_CONFIRM
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