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MEDIUM · 4.7

CVE-2021-46795

A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially result in a denial of ...

Vulnerability Description

A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially result in a denial of service.

CVSS Score

4.7

MEDIUM

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
AmdComboam4V2 Pi Firmware< 1.2.0.5
AmdComboam4V2 Pi-
AmdRenoirpi-Fp6 Firmware< 1.0.0.7
AmdCezannepi-Fp6 Firmware< 1.0.0.6
AmdCezannepi-Fp6-

Related Weaknesses (CWE)

CWE-367

References

FAQ

What is CVE-2021-46795?

CVE-2021-46795 is a vulnerability with a CVSS score of 4.7 (MEDIUM). A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially result in a denial of ...

How severe is CVE-2021-46795?

CVE-2021-46795 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-46795?

Check the references section above for vendor advisories and patch information. Affected products include: Amd Comboam4V2 Pi Firmware, Amd Comboam4V2 Pi, Amd Renoirpi-Fp6 Firmware, Amd Cezannepi-Fp6 Firmware, Amd Cezannepi-Fp6.