BaseFortify

Publication date: 2025-12-16

Last updated on: 2025-12-17

Assigner: MITRE

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 PCIe driver that could result in an out-of-bounds write within PCIe driver’s S-EL0 address space.

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-12-16

Last Modified

2025-12-17

Generated

2026-07-06

AI Q&A

2025-12-16

EPSS Evaluated

2026-07-05

NVD

CVE-2025-62863

Affected Vendors & Products

Vendor	Product	Version / Range
ampere	ampereone_m	*
ampere	ampereone_ac04	*
ampere	ampereone_ac03	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability exists in certain Ampere AmpereOne devices where an incorrectly formed SMC (Secure Monitor Call) to the UEFI-MM PCIe driver can cause an out-of-bounds write within the PCIe driver's S-EL0 address space. This means that improper input to the PCIe driver can lead to memory corruption.

Impact Analysis

The vulnerability could lead to memory corruption in the PCIe driver, which may result in system instability, crashes, or potentially allow an attacker to execute arbitrary code or escalate privileges on affected devices.

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