HIGH · 7.5

CVE-2021-26338

Improper access controls in System Management Unit (SMU) may allow for an attacker to override performance control tables located in DRAM resulting in a potential lack of system resources.

Vulnerability Description

Improper access controls in System Management Unit (SMU) may allow for an attacker to override performance control tables located in DRAM resulting in a potential lack of system resources.

CVSS Score

7.5

HIGH

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

Affected Products

VendorProductVersions
AmdEpyc 7F72 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7F72-
AmdEpyc 7F52 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7F52-
AmdEpyc 7F32 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7F32-
AmdEpyc 7H12 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7H12-
AmdEpyc 7742 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7742-
AmdEpyc 7702 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7702-
AmdEpyc 7702P Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7702P-
AmdEpyc 7662 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7662-
AmdEpyc 7642 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7642-
AmdEpyc 7552 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7552-

Related Weaknesses (CWE)

References

FAQ

What is CVE-2021-26338?

CVE-2021-26338 is a vulnerability with a CVSS score of 7.5 (HIGH). Improper access controls in System Management Unit (SMU) may allow for an attacker to override performance control tables located in DRAM resulting in a potential lack of system resources.

How severe is CVE-2021-26338?

CVE-2021-26338 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-26338?

Check the references section above for vendor advisories and patch information. Affected products include: Amd Epyc 7F72 Firmware, Amd Epyc 7F72, Amd Epyc 7F52 Firmware, Amd Epyc 7F52, Amd Epyc 7F32 Firmware.