CVE-2021-26404 (GCVE-0-2021-26404)
Vulnerability from cvelistv5 – Published: 2023-01-10 20:56 – Updated: 2025-04-08 20:22
VLAI
EPSS
VEX
Summary
Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes leading to potential information disclosure.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-08 20:20 UTC
CWE
- n/a
- CWE-20 - Improper Input Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.amd.com/en/corporate/product-security… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| AMD | 3rd Gen EPYC |
Affected:
various
|
guessed |
Date Public
2023-01-10 17:30
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T20:26:25.180Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2021-26404",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-04-08T20:20:43.599778Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-20",
"description": "CWE-20 Improper Input Validation",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-04-08T20:22:33.575Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"packageName": "AGESA",
"platforms": [
"x86"
],
"product": "3rd Gen EPYC",
"vendor": "AMD",
"versions": [
{
"status": "affected",
"version": "various "
}
]
}
],
"datePublic": "2023-01-10T17:30:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes leading to potential information disclosure.\u003cbr\u003e"
}
],
"value": "Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes leading to potential information disclosure.\n"
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "n/a",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2023-01-11T07:01:59.843Z",
"orgId": "b58fc414-a1e4-4f92-9d70-1add41838648",
"shortName": "AMD"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032"
}
],
"source": {
"advisory": "AMD-SB-1032",
"discovery": "UNKNOWN"
},
"x_generator": {
"engine": "Vulnogram 0.1.0-dev"
}
}
},
"cveMetadata": {
"assignerOrgId": "b58fc414-a1e4-4f92-9d70-1add41838648",
"assignerShortName": "AMD",
"cveId": "CVE-2021-26404",
"datePublished": "2023-01-10T20:56:44.456Z",
"dateReserved": "2021-01-29T21:24:26.170Z",
"dateUpdated": "2025-04-08T20:22:33.575Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2021-26404",
"date": "2026-09-25",
"epss": "0.00185",
"percentile": "0.07174"
},
"nvd": {
"cve": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_7003_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "1F43FE6B-1CE0-4C93-B457-385D60D0BC7E",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_7003:-:*:*:*:*:*:*:*",
"matchCriteriaId": "C912AA31-FB2D-4BD9-B1BD-3C8D7EEE771C",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_7313_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "CED4A938-7B21-4DBE-945E-04FD76712CDD",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_7313:-:*:*:*:*:*:*:*",
"matchCriteriaId": "B02B61B7-7DD3-4164-8D32-EB961E981BC9",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_7313p_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "35BC64A9-A82B-4D1A-A070-541F429632FD",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_7313p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "9000686A-DC2B-4561-9C32-E90890EB2EBA",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_7343_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "E2909C50-60B7-45A4-A597-B9B13A3136C6",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_7343:-:*:*:*:*:*:*:*",
"matchCriteriaId": "71B9C24B-2C10-4826-A91B-E1C60665FBBE",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_7373x_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "8C5F5AAD-06AB-4AE2-ADDF-C704278B1E63",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_7373x:-:*:*:*:*:*:*:*",
"matchCriteriaId": "180B3002-B3C5-48B5-8322-5B64B237C5B9",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_73f3_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "8B13FA57-6D07-4461-B40C-227977EFB67F",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_73f3:-:*:*:*:*:*:*:*",
"matchCriteriaId": "678C5F58-8AE9-46FF-8F01-4CF394C87A2C",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_7413_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "4D45D2D3-EACD-40A7-A2E4-3E4918C1AAFE",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_7413:-:*:*:*:*:*:*:*",
"matchCriteriaId": "D1766FF1-77A9-4293-B826-F6A8FBD7AFBF",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_7443_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "A9BBB5C7-942A-4B1D-9219-7D158D6B65E3",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_7443:-:*:*:*:*:*:*:*",
"matchCriteriaId": "4C474537-3006-41BA-8C3D-5C370E3ACECD",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_7443p_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "9EA98910-C8B0-4449-A3AD-5C2356C917A8",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_7443p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "8E2B13CA-72F4-4CF6-9E12-62E6E9056A14",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_7453_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "4A92937F-8BB5-4D63-A589-58BF847F06CA",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_7453:-:*:*:*:*:*:*:*",
"matchCriteriaId": "241E39FF-FE66-444C-A4C2-3D28C45341BE",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_7473x_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "80D9BAD4-AA85-45C6-9246-089D8C4FB30F",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_7473x:-:*:*:*:*:*:*:*",
"matchCriteriaId": "D07E922F-C1AB-469C-A1C1-9F9E58332DFC",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_74f3_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "5BB76635-870C-4304-B435-FFCD671FA882",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_74f3:-:*:*:*:*:*:*:*",
"matchCriteriaId": "02D08121-DC57-47D7-8214-23A209F0AF08",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_7513_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "7C0B8817-B424-4F8C-B6A0-8305C6317A65",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_7513:-:*:*:*:*:*:*:*",
"matchCriteriaId": "F8264DF4-47B4-4716-AE89-44AFA870D385",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_7543_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "661AC564-7A60-4E10-ADC3-964A04FBA896",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_7543:-:*:*:*:*:*:*:*",
"matchCriteriaId": "52544912-FAA3-4025-A5FD-151B21CEC53B",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_7543p_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "5B7EB27B-1963-4057-9088-CBC6FBCD91F6",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_7543p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "77A0A47B-74A1-4731-92A8-BC10FFE58ECF",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_7573x_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "3B8ED95C-4703-4C83-B787-096FB2730CCA",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_7573x:-:*:*:*:*:*:*:*",
"matchCriteriaId": "237FB33B-BF08-4E3E-8E83-EB0AD2F12A4B",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_7643_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "2499FB92-B422-4E92-960B-FB67B4C8108F",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_7643:-:*:*:*:*:*:*:*",
"matchCriteriaId": "98E1D79D-0CB0-4FD9-8A82-27CDFBFE07B2",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_75f3_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "69C1BF26-EE53-4D48-A4CB-FB04E3DE6697",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_75f3:-:*:*:*:*:*:*:*",
"matchCriteriaId": "EBF0AFED-588A-4EFB-8C90-9280BC3A6720",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_7663_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "52B04F08-3447-4686-A965-65F8C7C64696",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_7663:-:*:*:*:*:*:*:*",
"matchCriteriaId": "A7DFCB62-6CDF-4AD2-9265-1887E5780CA5",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_7713_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "4F45D168-7370-454E-AA01-66A5F418AAFA",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_7713:-:*:*:*:*:*:*:*",
"matchCriteriaId": "4D698D3E-BB05-4C65-90F4-8DAE275CD6A4",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_7713p_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "5B612010-419B-4F5C-8B00-C5BCE6B20EE3",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_7713p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "2299ED50-B4D2-4BB3-AD87-56D552B84AE1",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_7763_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "964257EB-311C-4323-AE2C-4BD97FB21798",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_7763:-:*:*:*:*:*:*:*",
"matchCriteriaId": "4F900BDD-F094-41A6-9A23-31F53DBA95D4",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:amd:epyc_7773x_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "816CE49A-4C18-4834-883B-2F19644C831D",
"versionEndExcluding": "milanpi-sp3_1.0.0.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_7773x:-:*:*:*:*:*:*:*",
"matchCriteriaId": "D02B1C69-BAA4-485B-BE22-46BE321F9E4E",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes leading to potential information disclosure.\n"
},
{
"lang": "es",
"value": "La validaci\u00f3n de entrada y la verificaci\u00f3n de los l\u00edmites inadecuadas en el firmware SEV pueden perder bytes del b\u00fafer temporal, lo que puede provocar una posible divulgaci\u00f3n de informaci\u00f3n."
}
],
"id": "CVE-2021-26404",
"lastModified": "2025-04-08T21:15:43.733",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
},
"published": "2023-01-11T08:15:11.647",
"references": [
{
"source": "psirt@amd.com",
"tags": [
"Vendor Advisory"
],
"url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032"
}
],
"sourceIdentifier": "psirt@amd.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-20"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-20"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2025-05-29T04:22:58+00:00",
"cve": "CVE-2021-26404",
"id": "CVE-2021-26404",
"initial_release_date": "2021-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "CVE-2021-26404",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-26404.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T20:26:25.180Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2021-26404",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-04-08T20:20:43.599778Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-20",
"description": "CWE-20 Improper Input Validation",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-04-08T20:22:18.256Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"packageName": "AGESA",
"platforms": [
"x86"
],
"product": "3rd Gen EPYC",
"vendor": "AMD",
"versions": [
{
"status": "affected",
"version": "various "
}
]
}
],
"datePublic": "2023-01-10T17:30:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes leading to potential information disclosure.\u003cbr\u003e"
}
],
"value": "Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes leading to potential information disclosure.\n"
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "n/a",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2023-01-11T07:01:59.843Z",
"orgId": "b58fc414-a1e4-4f92-9d70-1add41838648",
"shortName": "AMD"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032"
}
],
"source": {
"advisory": "AMD-SB-1032",
"discovery": "UNKNOWN"
},
"x_generator": {
"engine": "Vulnogram 0.1.0-dev"
}
}
},
"cveMetadata": {
"assignerOrgId": "b58fc414-a1e4-4f92-9d70-1add41838648",
"assignerShortName": "AMD",
"cveId": "CVE-2021-26404",
"datePublished": "2023-01-10T20:56:44.456Z",
"dateReserved": "2021-01-29T21:24:26.170Z",
"dateUpdated": "2025-04-08T20:22:33.575Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…