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    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2021-26356",
        "assignerOrgId": "b58fc414-a1e4-4f92-9d70-1add41838648",
        "state": "PUBLISHED",
        "assignerShortName": "AMD",
        "dateReserved": "2021-01-29T21:24:26.149Z",
        "datePublished": "2023-05-09T18:58:48.108Z",
        "dateUpdated": "2025-01-28T15:48:38.470Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "packageName": "AGESA",
                    "platforms": [
                        "x86"
                    ],
                    "product": "Ryzen™ 3000 Series Desktop Processors “Matisse” AM4",
                    "vendor": "AMD",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "various "
                        }
                    ]
                },
                {
                    "defaultStatus": "unaffected",
                    "packageName": "AGESA",
                    "platforms": [
                        "x86"
                    ],
                    "product": "AMD Ryzen™ 5000 Series Desktop Processors “Vermeer” AM4",
                    "vendor": "AMD",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "various "
                        }
                    ]
                },
                {
                    "defaultStatus": "unaffected",
                    "packageName": "AGESA",
                    "platforms": [
                        "x86"
                    ],
                    "product": "3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDT",
                    "vendor": "AMD",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "various"
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                    ]
                },
                {
                    "defaultStatus": "unaffected",
                    "packageName": "AGESA",
                    "platforms": [
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                    "product": "Ryzen™ Threadripper™ PRO Processors “Castle Peak” WS",
                    "vendor": "AMD",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "various "
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                {
                    "defaultStatus": "unaffected",
                    "packageName": "AGESA",
                    "platforms": [
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                    "product": "Ryzen™ Threadripper™ PRO Processors “Chagall” WS",
                    "vendor": "AMD",
                    "versions": [
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                            "status": "affected",
                            "version": "various "
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                    ]
                },
                {
                    "defaultStatus": "unaffected",
                    "packageName": "AGESA",
                    "platforms": [
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                    ],
                    "product": "1st Gen AMD EPYC™ Processors",
                    "vendor": "AMD",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "various "
                        }
                    ]
                },
                {
                    "defaultStatus": "unaffected",
                    "packageName": "AGESA",
                    "platforms": [
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                    "product": "2nd Gen AMD EPYC™ Processors",
                    "vendor": "AMD",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "various "
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                    ]
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                {
                    "defaultStatus": "unaffected",
                    "packageName": "AGESA",
                    "platforms": [
                        "x86"
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                    "product": "3rd Gen AMD EPYC™ Processors",
                    "vendor": "AMD",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "various "
                        }
                    ]
                }
            ],
            "datePublic": "2023-05-09T16:30:00.000Z",
            "descriptions": [
                {
                    "lang": "en",
                    "supportingMedia": [
                        {
                            "base64": false,
                            "type": "text/html",
                            "value": "A TOCTOU in ASP bootloader may allow an attacker\nto tamper with the SPI ROM following data read to memory potentially resulting\nin S3 data corruption and information disclosure.\n\n\n\n\n\n\n\n<br>"
                        }
                    ],
                    "value": "A TOCTOU in ASP bootloader may allow an attacker\nto tamper with the SPI ROM following data read to memory potentially resulting\nin S3 data corruption and information disclosure.\n\n\n\n\n\n\n\n\n"
                }
            ],
            "providerMetadata": {
                "orgId": "b58fc414-a1e4-4f92-9d70-1add41838648",
                "shortName": "AMD",
                "dateUpdated": "2023-05-09T18:58:48.108Z"
            },
            "references": [
                {
                    "tags": [
                        "vendor-advisory"
                    ],
                    "url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001"
                },
                {
                    "tags": [
                        "vendor-advisory"
                    ],
                    "url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001"
                }
            ],
            "source": {
                "advisory": "AMD-SB-4001, AMD-SB-3001",
                "discovery": "UNKNOWN"
            },
            "x_generator": {
                "engine": "Vulnogram 0.1.0-dev"
            }
        },
        "adp": [
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-03T20:26:24.804Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "tags": [
                            "vendor-advisory",
                            "x_transferred"
                        ],
                        "url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001"
                    },
                    {
                        "tags": [
                            "vendor-advisory",
                            "x_transferred"
                        ],
                        "url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001"
                    }
                ]
            },
            {
                "problemTypes": [
                    {
                        "descriptions": [
                            {
                                "type": "CWE",
                                "cweId": "CWE-367",
                                "lang": "en",
                                "description": "CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition"
                            }
                        ]
                    }
                ],
                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 7.4,
                            "attackVector": "NETWORK",
                            "baseSeverity": "HIGH",
                            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
                            "integrityImpact": "HIGH",
                            "userInteraction": "NONE",
                            "attackComplexity": "HIGH",
                            "availabilityImpact": "NONE",
                            "privilegesRequired": "NONE",
                            "confidentialityImpact": "HIGH"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2025-01-28T15:48:34.459184Z",
                                "id": "CVE-2021-26356",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2025-01-28T15:48:38.470Z"
                }
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}