CVE-2025-62864

EUVD-2025-203817
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA-ADPADP
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 17%
Affected Products (NVD)
VendorProductVersion
amperecomputingampereone_a192-32m_firmware
𝑥
< 5.4.5.1
amperecomputingampereone_a192-26m_firmware
𝑥
< 5.4.5.1
amperecomputingampereone_a160-28m_firmware
𝑥
< 5.4.5.1
amperecomputingampereone_a144-33m_firmware
𝑥
< 5.4.5.1
amperecomputingampereone_a144-26m_firmware
𝑥
< 5.4.5.1
amperecomputingampereone_a96-36m_firmware
𝑥
< 5.4.5.1
amperecomputingampereone_a96-36x_firmware
𝑥
< 4.4.5.2
amperecomputingampereone_a128-34x_firmware
𝑥
< 4.4.5.2
amperecomputingampereone_a144-24x_firmware
𝑥
< 4.4.5.2
amperecomputingampereone_a144-27x_firmware
𝑥
< 4.4.5.2
amperecomputingampereone_a160-28x_firmware
𝑥
< 4.4.5.2
amperecomputingampereone_a192-26x_firmware
𝑥
< 4.4.5.2
amperecomputingampereone_a192-26x_firmware
𝑥
< 3.5.9.3
amperecomputingampereone_a192-32x_firmware
𝑥
< 3.5.9.3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://amperecomputing.com/products/product-security
https://amperecomputing.com/products/security-bulletins/amp-sb-0007