CVE-2025-62864CRITICAL 9.8EPSS p22.9%

CVE-2025-62864CVE-2025-62864

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.31% probability of exploitation · percentile 22.9% · 2026-06-19T12:03:05Z
Published2025-12-16
Last modified2026-01-13

Underlying weaknesses· 1

CWE-787

References

  1. https://amperecomputing.com/products/product-security
  2. https://amperecomputing.com/products/security-bulletins/amp-sb-0007

1

TypeTargetConfidenceTier
WeaknessOut-of-bounds Writecwe-7870%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.