CVE 9.8 CRITICAL

CVE-2025-62864_CVE-2025-62864

December 17, 2025 invoker category_cve

9.8 / 10

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

AI Analysis

Out-of-bounds write vulnerability in AmpereOne devices via an incorrectly formed SMC call to UEFI-MM MMCommunicate service

Basic Information

ID CVE-2025-62864

Source mitre

Published Dec 16, 2025 at 00:00

Modified Dec 17, 2025 at 14:31

Affected Product

Vendor Ampere Computing

Product AmpereOne

Version 3.5.9.3, 4.4.5.2, 5.4.5.1

Affected Versions n/a n/a n/a

CWE Classification

CWE-787

AI Assessment

AI Score 9.8 / 10

AI Severity Critical

Vendor Ampere Computing

Product AmpereOne

Version 3.5.9.3, 4.4.5.2, 5.4.5.1

References

{
    "lastseen": "",
    "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.",
    "published": "2025-12-16T00:00:00.000Z",
    "modified": "2025-12-17T14:31:33.278Z",
    "type": "cve",
    "title": "CVE-2025-62864",
    "source": "mitre",
    "references": "https://amperecomputing.com/products/product-security\nhttps://amperecomputing.com/products/security-bulletins/amp-sb-0007",
    "id": "CVE-2025-62864",
    "bulletinFamily": "",
    "cwe": [
        "CWE-787"
    ],
    "cvelist": null,
    "sourceData": "n/a n/a n/a",
    "sourceHref": "",
    "cvss": {
        "score": 9.8,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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            "baseScore": 0,
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            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "AmpereOne",
    "version": "3.5.9.3, 4.4.5.2, 5.4.5.1",
    "vendor": "Ampere Computing",
    "ai_description": "Out-of-bounds write vulnerability in AmpereOne devices via an incorrectly formed SMC call to UEFI-MM MMCommunicate service",
    "ai_severity": "Critical",
    "ai_vendor": "Ampere Computing",
    "ai_product": "AmpereOne",
    "ai_version": "3.5.9.3, 4.4.5.2, 5.4.5.1",
    "ai_score": 9.8
}

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