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High severity8.2NVD Advisory· Published Feb 3, 2022· Updated Aug 11, 2026

CVE-2021-43323

CVE-2021-43323

Description

An issue was discovered in UsbCoreDxe in Insyde InsydeH2O with kernel 5.5 before 05.51.45, 5.4 before 05.43.45, 5.3 before 05.35.45, 5.2 before 05.26.45, 5.1 before 05.16.45, and 5.0 before 05.08.45. An SMM callout vulnerability allows an attacker to hijack execution flow of code running in System Management Mode. 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

5
  • Insyde/InsydeH2O2 versions
    cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*range: >=5.1,<5.16.45
    • (no CPE)range: <05.51.45, <05.43.45, <05.35.45, <05.26.45, <05.16.45, <05.08.45
  • Insyde/InsydeH2Odescription
  • Siemens Foundation/InsydeH2Ollm-create
    Range: <05.51.45, <05.43.45, <05.35.45, <05.26.45, <05.16.45, <05.08.45
  • NetApp/InsydeH2Ollm-create
    Range: <05.51.45, <05.43.45, <05.35.45, <05.26.45, <05.16.45, <05.08.45

Patches

Vulnerability mechanics

References

5

News mentions

0

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