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CRITICAL · 9.8

CVE-2025-62864

Ampere AmpereOne AC03 devices before 3.5.9.3, AmpereOne AC04 devices before 4.4.5.2, and AmpereOne M devices before 5.4.5.1 allow an incorrectly formed SMC call to UEFI-MM MMCommunicate service that c...

Vulnerability Description

Ampere AmpereOne AC03 devices before 3.5.9.3, AmpereOne AC04 devices before 4.4.5.2, and AmpereOne M devices before 5.4.5.1 allow an incorrectly formed SMC call to UEFI-MM MMCommunicate service that could result in an out-of-bounds write within the UEFI-MM Secure Partition context.

CVSS Score

9.8

CRITICAL

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

Affected Products

VendorProductVersions
AmperecomputingAmpereone A192-32M Firmware< 5.4.5.1
AmperecomputingAmpereone A192-32M-
AmperecomputingAmpereone A192-26M Firmware< 5.4.5.1
AmperecomputingAmpereone A192-26M-
AmperecomputingAmpereone A160-28M Firmware< 5.4.5.1
AmperecomputingAmpereone A160-28M-
AmperecomputingAmpereone A144-33M Firmware< 5.4.5.1
AmperecomputingAmpereone A144-33M-
AmperecomputingAmpereone A144-26M Firmware< 5.4.5.1
AmperecomputingAmpereone A144-26M-
AmperecomputingAmpereone A96-36M Firmware< 5.4.5.1
AmperecomputingAmpereone A96-36M-
AmperecomputingAmpereone A96-36X Firmware< 4.4.5.2
AmperecomputingAmpereone A96-36X-
AmperecomputingAmpereone A128-34X Firmware< 4.4.5.2
AmperecomputingAmpereone A128-34X-
AmperecomputingAmpereone A144-24X Firmware< 4.4.5.2
AmperecomputingAmpereone A144-24X-
AmperecomputingAmpereone A144-27X Firmware< 4.4.5.2
AmperecomputingAmpereone A144-27X-

Related Weaknesses (CWE)

CWE-787

References

FAQ

What is CVE-2025-62864?

CVE-2025-62864 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Ampere AmpereOne AC03 devices before 3.5.9.3, AmpereOne AC04 devices before 4.4.5.2, and AmpereOne M devices before 5.4.5.1 allow an incorrectly formed SMC call to UEFI-MM MMCommunicate service that c...

How severe is CVE-2025-62864?

CVE-2025-62864 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2025-62864?

Check the references section above for vendor advisories and patch information. Affected products include: Amperecomputing Ampereone A192-32M Firmware, Amperecomputing Ampereone A192-32M, Amperecomputing Ampereone A192-26M Firmware, Amperecomputing Ampereone A192-26M, Amperecomputing Ampereone A160-28M Firmware.