Out-of-Bounds Read in Ampere AmpereOne AC03 devices (CVE-2025-62862, CVSS 4.6)

Summary

Vulnerability in Ampere AmpereOne AC03 devices (CVE-2025-62862). Risk of unauthorized operations or information disclosure.

Original description

The description as published by the source.

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 Boot Error Record Table driver that could result in (1) an out-of-bounds read which leaks Secure-EL0 information to a process running in Non-Secure state or (2) an out-of-bounds write which corrupts Secure or Non-Secure memory, limited to memory mapped to UEFI-MM Secure Partition by the Secure Partition Manager.

Source: NIST National Vulnerability Database NVD

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2025-62862 has been found in Ampere AmpereOne AC03 devices.
Risk of unauthorized operations or information disclosure. CVSS score: 4.6/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Ampere AmpereOne AC03 devices CVE-2025-62862" on the vendor's site.

CVE-2025-62862 (Ampere AmpereOne AC03 devices) — CWE-125 / CVSS v3 4.6
Attack vector: local / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

Out-of-bounds read (CWE-125) exists in Ampere AmpereOne AC03 devices.

📍 Affected scope

Check the vendor advisory for the affected versions of Ampere AmpereOne AC03 devices.

🔥 Severity

Severity: Medium (CVSS 4.6/10). Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to the patched release per vendor advisory.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

1
Identify exposure identify
```
Audit SBOM/dependencies for affected components.
```
資産台帳・SBOM・依存マニフェストで Ampere AmpereOne AC03 devices を使っているサービスとバージョンを洗い出す。
2
Post-deployment verification verify
```
Confirm patched version is live in production
```
パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

References

patch cve@mitre.org
patch cve@mitre.org