CVE-2025-62864

CRITICAL EPSS 23.1%
Published Dec 16, 20256mo ago · Modified Jun 17, 20262w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Dec 16, 2025 6mo ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
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

Threat Intelligence

EPSS Exploit Probability
23.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 28

VendorProductVersionRange
amperecomputingampereone_a192-32m_firmware* <5.4.5.1
amperecomputingampereone_a192-32m*any
amperecomputingampereone_a192-26m_firmware* <5.4.5.1
amperecomputingampereone_a192-26m*any
amperecomputingampereone_a160-28m_firmware* <5.4.5.1
amperecomputingampereone_a160-28m*any
amperecomputingampereone_a144-33m_firmware* <5.4.5.1
amperecomputingampereone_a144-33m*any
amperecomputingampereone_a144-26m_firmware* <5.4.5.1
amperecomputingampereone_a144-26m*any
amperecomputingampereone_a96-36m_firmware* <5.4.5.1
amperecomputingampereone_a96-36m*any
amperecomputingampereone_a96-36x_firmware* <4.4.5.2
amperecomputingampereone_a96-36x*any
amperecomputingampereone_a128-34x_firmware* <4.4.5.2
amperecomputingampereone_a128-34x*any
amperecomputingampereone_a144-24x_firmware* <4.4.5.2
amperecomputingampereone_a144-24x*any
amperecomputingampereone_a144-27x_firmware* <4.4.5.2
amperecomputingampereone_a144-27x*any
amperecomputingampereone_a160-28x_firmware* <4.4.5.2
amperecomputingampereone_a160-28x*any
amperecomputingampereone_a192-26x_firmware* <4.4.5.2
amperecomputingampereone_a192-26x*any
amperecomputingampereone_a192-26x_firmware* <3.5.9.3
amperecomputingampereone_a192-26x*any
amperecomputingampereone_a192-32x_firmware* <3.5.9.3
amperecomputingampereone_a192-32x*any

References 2

  • amperecomputing.com https://amperecomputing.com/products/product-security
    Vendor Advisory
  • amperecomputing.com https://amperecomputing.com/products/security-bulletins/amp-sb-0007
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.