CVE-2021-26311 (GCVE-0-2021-26311)
Vulnerability from cvelistv5 – Published: 2021-05-13 11:06 – Updated: 2024-09-17 04:25
VLAI
EPSS
VEX
Title
AMD Secure Encrypted Virtualization
Summary
In the AMD SEV/SEV-ES feature, memory can be rearranged in the guest address space that is not detected by the attestation mechanism which could be used by a malicious hypervisor to potentially lead to arbitrary code execution within the guest VM if a malicious administrator has access to compromise the server hypervisor.
Severity
7.2 (High)
CWE
- Arbitrary Code Execution
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.amd.com/en/corporate/product-security… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| AMD | SEV/SEV-ES |
Affected:
unspecified , < SEV-SNP
(custom)
|
guessed |
Date Public
2021-05-11 00:00
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T20:19:20.364Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1004"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "SEV/SEV-ES",
"vendor": "AMD",
"versions": [
{
"lessThan": "SEV-SNP",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
],
"datePublic": "2021-05-11T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "In the AMD SEV/SEV-ES feature, memory can be rearranged in the guest address space that is not detected by the attestation mechanism which could be used by a malicious hypervisor to potentially lead to arbitrary code execution within the guest VM if a malicious administrator has access to compromise the server hypervisor."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "Arbitrary Code Execution",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2021-05-13T11:06:17.000Z",
"orgId": "b58fc414-a1e4-4f92-9d70-1add41838648",
"shortName": "AMD"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1004"
}
],
"source": {
"advisory": "AMD-SB-1004",
"discovery": "EXTERNAL"
},
"title": "AMD Secure Encrypted Virtualization",
"x_generator": {
"engine": "Vulnogram 0.0.9"
},
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "psirt@amd.com",
"DATE_PUBLIC": "2021-05-11T18:43:00.000Z",
"ID": "CVE-2021-26311",
"STATE": "PUBLIC",
"TITLE": "AMD Secure Encrypted Virtualization"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "SEV/SEV-ES",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_value": "SEV-SNP"
}
]
}
}
]
},
"vendor_name": "AMD"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "In the AMD SEV/SEV-ES feature, memory can be rearranged in the guest address space that is not detected by the attestation mechanism which could be used by a malicious hypervisor to potentially lead to arbitrary code execution within the guest VM if a malicious administrator has access to compromise the server hypervisor."
}
]
},
"generator": {
"engine": "Vulnogram 0.0.9"
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "Arbitrary Code Execution"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1004",
"refsource": "MISC",
"url": "https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1004"
}
]
},
"source": {
"advisory": "AMD-SB-1004",
"discovery": "EXTERNAL"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "b58fc414-a1e4-4f92-9d70-1add41838648",
"assignerShortName": "AMD",
"cveId": "CVE-2021-26311",
"datePublished": "2021-05-13T11:06:17.662Z",
"dateReserved": "2021-01-29T00:00:00.000Z",
"dateUpdated": "2024-09-17T04:25:26.352Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2021-26311",
"date": "2026-09-21",
"epss": "0.01683",
"percentile": "0.75576"
},
"fkie_nvd": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_7232p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "16D55BEF-AFC8-45DC-9401-5DEF374E16C5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7251:-:*:*:*:*:*:*:*",
"matchCriteriaId": "565383C4-F690-4E3B-8A6A-B7D4ACCFAA05",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7252:-:*:*:*:*:*:*:*",
"matchCriteriaId": "9B816918-6CCF-4010-AA16-7BF8A93AD7D1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7261:-:*:*:*:*:*:*:*",
"matchCriteriaId": "71ED05E6-8E69-41B9-9A36-CCE2D59A2603",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7262:-:*:*:*:*:*:*:*",
"matchCriteriaId": "4FBBFDD3-A85D-43A3-AD67-D69E91C633B6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7272:-:*:*:*:*:*:*:*",
"matchCriteriaId": "8F187412-26C2-4D8C-9199-D7CCF49D6520",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7281:-:*:*:*:*:*:*:*",
"matchCriteriaId": "805B4FEA-CFB2-429C-818B-9277B6D546C3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7282:-:*:*:*:*:*:*:*",
"matchCriteriaId": "26FC5683-F612-4586-8BA3-FB1F66D8868B",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_72f3:-:*:*:*:*:*:*:*",
"matchCriteriaId": "7F98FF1A-3A2B-4CED-AEA2-9C4F2AC2D8C1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7301:-:*:*:*:*:*:*:*",
"matchCriteriaId": "F65FC5B9-0803-4D7F-8EF6-7B6681418596",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7302:-:*:*:*:*:*:*:*",
"matchCriteriaId": "0F7CB05E-C4F4-481F-AFB0-9288EBE6DB62",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7302p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "8A2E0AC0-8BDE-49F8-B067-DB03037921DD",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7313:-:*:*:*:*:*:*:*",
"matchCriteriaId": "B02B61B7-7DD3-4164-8D32-EB961E981BC9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7313p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "9000686A-DC2B-4561-9C32-E90890EB2EBA",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7343:-:*:*:*:*:*:*:*",
"matchCriteriaId": "71B9C24B-2C10-4826-A91B-E1C60665FBBE",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7351:-:*:*:*:*:*:*:*",
"matchCriteriaId": "8A5FC951-9FAD-45B4-B7CF-D1A9482507F5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7351p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "9BB78361-9AAD-44BD-8B30-65715FEA4C06",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7352:-:*:*:*:*:*:*:*",
"matchCriteriaId": "A1540CCD-1ED8-4B4E-AD43-7DE2689D9A21",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7371:-:*:*:*:*:*:*:*",
"matchCriteriaId": "FA7576CB-A818-47A1-9A0D-6B8FD105FF08",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_73f3:-:*:*:*:*:*:*:*",
"matchCriteriaId": "678C5F58-8AE9-46FF-8F01-4CF394C87A2C",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7401:-:*:*:*:*:*:*:*",
"matchCriteriaId": "C05F1EF0-3576-4D47-8704-36E9FAB1D432",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7401p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "A2E41A87-7A39-4BB2-88E4-16DF0D81BFD2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7402:-:*:*:*:*:*:*:*",
"matchCriteriaId": "430C9955-0090-4166-8E90-D81C2AA7DE0D",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7402p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "92EBDDBF-37C2-4D09-B744-F78169B2C1C3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7413:-:*:*:*:*:*:*:*",
"matchCriteriaId": "D1766FF1-77A9-4293-B826-F6A8FBD7AFBF",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7443:-:*:*:*:*:*:*:*",
"matchCriteriaId": "4C474537-3006-41BA-8C3D-5C370E3ACECD",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7443p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "8E2B13CA-72F4-4CF6-9E12-62E6E9056A14",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7451:-:*:*:*:*:*:*:*",
"matchCriteriaId": "51C8CF00-8FC8-4206-9028-6F104699DE76",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7452:-:*:*:*:*:*:*:*",
"matchCriteriaId": "68ACF30E-62DD-4217-B7F0-4A0FFF47E8EF",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7453:-:*:*:*:*:*:*:*",
"matchCriteriaId": "241E39FF-FE66-444C-A4C2-3D28C45341BE",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_74f3:-:*:*:*:*:*:*:*",
"matchCriteriaId": "02D08121-DC57-47D7-8214-23A209F0AF08",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7501:-:*:*:*:*:*:*:*",
"matchCriteriaId": "4E8BAB73-6F45-49AB-8F00-49A488006F3E",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7502:-:*:*:*:*:*:*:*",
"matchCriteriaId": "49BBC687-5C3C-4843-A028-B8BE29D1E302",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7502p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "563708A3-7C51-4693-B02D-9A25A639FE42",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7513:-:*:*:*:*:*:*:*",
"matchCriteriaId": "F8264DF4-47B4-4716-AE89-44AFA870D385",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7532:-:*:*:*:*:*:*:*",
"matchCriteriaId": "1EDABE45-F529-453C-92DC-BF7747CEEC0E",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7542:-:*:*:*:*:*:*:*",
"matchCriteriaId": "BC94B03B-A7FE-47AE-969D-FFEF278A7A9B",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7543:-:*:*:*:*:*:*:*",
"matchCriteriaId": "52544912-FAA3-4025-A5FD-151B21CEC53B",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7543p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "77A0A47B-74A1-4731-92A8-BC10FFE58ECF",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7551:-:*:*:*:*:*:*:*",
"matchCriteriaId": "1AAB403A-5A36-4DC3-A187-99127CF77BA7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7551p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "01BE5D42-1C62-4381-89E0-8F3264F696EC",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7552:-:*:*:*:*:*:*:*",
"matchCriteriaId": "7A6C7497-1B63-490F-B8EA-D9F3CB790952",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_75f3:-:*:*:*:*:*:*:*",
"matchCriteriaId": "EBF0AFED-588A-4EFB-8C90-9280BC3A6720",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7601:-:*:*:*:*:*:*:*",
"matchCriteriaId": "168076CD-1E6D-4328-AB59-4C1A90735AC4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7642:-:*:*:*:*:*:*:*",
"matchCriteriaId": "1EDF8A1E-B259-43D0-A56C-8C2BB688A32C",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7643:-:*:*:*:*:*:*:*",
"matchCriteriaId": "98E1D79D-0CB0-4FD9-8A82-27CDFBFE07B2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7662:-:*:*:*:*:*:*:*",
"matchCriteriaId": "3E8C6528-9100-41D2-88A2-FFEABAB8F86A",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7663:-:*:*:*:*:*:*:*",
"matchCriteriaId": "A7DFCB62-6CDF-4AD2-9265-1887E5780CA5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7702:-:*:*:*:*:*:*:*",
"matchCriteriaId": "8AC99346-DBF1-4060-8E6B-35D315944ADA",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7702p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "72C86198-0BD4-42E1-974B-70A49F82C411",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7713:-:*:*:*:*:*:*:*",
"matchCriteriaId": "4D698D3E-BB05-4C65-90F4-8DAE275CD6A4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7713p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "2299ED50-B4D2-4BB3-AD87-56D552B84AE1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7742:-:*:*:*:*:*:*:*",
"matchCriteriaId": "88F4A126-B4A6-480A-9DD7-7F68714DFB49",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7763:-:*:*:*:*:*:*:*",
"matchCriteriaId": "4F900BDD-F094-41A6-9A23-31F53DBA95D4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7f32:-:*:*:*:*:*:*:*",
"matchCriteriaId": "E25652AB-E243-4C40-BE12-AB53AF52CD61",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7f52:-:*:*:*:*:*:*:*",
"matchCriteriaId": "87543FB4-658A-4300-9DC9-836AC1D4BCFB",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7f72:-:*:*:*:*:*:*:*",
"matchCriteriaId": "07B3C659-C31A-4F82-9587-9F8A943F637D",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7h12:-:*:*:*:*:*:*:*",
"matchCriteriaId": "89FAAD8C-6DD1-408D-849B-0CE707321B13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_embedded_3101:-:*:*:*:*:*:*:*",
"matchCriteriaId": "839C6991-D387-471D-9112-C79677D5A5AB",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_embedded_3151:-:*:*:*:*:*:*:*",
"matchCriteriaId": "3480338B-290F-4E9C-88F9-A4160853B9BD",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_embedded_3201:-:*:*:*:*:*:*:*",
"matchCriteriaId": "6943C2EC-1555-40B8-9533-BBB6572E9073",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_embedded_3251:-:*:*:*:*:*:*:*",
"matchCriteriaId": "44A54822-42B0-47B4-A080-416D5C8AC20C",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_embedded_3255:-:*:*:*:*:*:*:*",
"matchCriteriaId": "2F8DDDB3-E4B0-4354-955F-E2196E404970",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_embedded_3351:-:*:*:*:*:*:*:*",
"matchCriteriaId": "4C3B6175-0366-473D-A82F-E3F1373C74F5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_embedded_3451:-:*:*:*:*:*:*:*",
"matchCriteriaId": "C38BB8F3-11AD-48C3-B751-AF93E3EA6138",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the AMD SEV/SEV-ES feature, memory can be rearranged in the guest address space that is not detected by the attestation mechanism which could be used by a malicious hypervisor to potentially lead to arbitrary code execution within the guest VM if a malicious administrator has access to compromise the server hypervisor."
},
{
"lang": "es",
"value": "En la funcionalidad SEV/SEV-ES de AMD, la memoria puede ser reorganizada en el espacio de direcciones del invitado que no es detectado por el mecanismo de certificaci\u00f3n que podr\u00eda ser utilizado por un hypervisor malicioso para conllevar potencialmente a una ejecuci\u00f3n de c\u00f3digo arbitraria dentro de la VM invitada si un administrador malicioso tiene acceso para comprometer el hypervisor del servidor"
}
],
"id": "CVE-2021-26311",
"lastModified": "2024-11-21T05:56:04.090",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "COMPLETE",
"baseScore": 9.0,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
"version": "2.0"
},
"exploitabilityScore": 8.0,
"impactScore": 10.0,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.2,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-05-13T12:15:07.597",
"references": [
{
"source": "psirt@amd.com",
"tags": [
"Vendor Advisory"
],
"url": "https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1004"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1004"
}
],
"sourceIdentifier": "psirt@amd.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-77"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"nvd": {
"cve": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:amd:epyc_7232p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "16D55BEF-AFC8-45DC-9401-5DEF374E16C5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7251:-:*:*:*:*:*:*:*",
"matchCriteriaId": "565383C4-F690-4E3B-8A6A-B7D4ACCFAA05",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7252:-:*:*:*:*:*:*:*",
"matchCriteriaId": "9B816918-6CCF-4010-AA16-7BF8A93AD7D1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7261:-:*:*:*:*:*:*:*",
"matchCriteriaId": "71ED05E6-8E69-41B9-9A36-CCE2D59A2603",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7262:-:*:*:*:*:*:*:*",
"matchCriteriaId": "4FBBFDD3-A85D-43A3-AD67-D69E91C633B6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7272:-:*:*:*:*:*:*:*",
"matchCriteriaId": "8F187412-26C2-4D8C-9199-D7CCF49D6520",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7281:-:*:*:*:*:*:*:*",
"matchCriteriaId": "805B4FEA-CFB2-429C-818B-9277B6D546C3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7282:-:*:*:*:*:*:*:*",
"matchCriteriaId": "26FC5683-F612-4586-8BA3-FB1F66D8868B",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_72f3:-:*:*:*:*:*:*:*",
"matchCriteriaId": "7F98FF1A-3A2B-4CED-AEA2-9C4F2AC2D8C1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7301:-:*:*:*:*:*:*:*",
"matchCriteriaId": "F65FC5B9-0803-4D7F-8EF6-7B6681418596",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7302:-:*:*:*:*:*:*:*",
"matchCriteriaId": "0F7CB05E-C4F4-481F-AFB0-9288EBE6DB62",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7302p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "8A2E0AC0-8BDE-49F8-B067-DB03037921DD",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7313:-:*:*:*:*:*:*:*",
"matchCriteriaId": "B02B61B7-7DD3-4164-8D32-EB961E981BC9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7313p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "9000686A-DC2B-4561-9C32-E90890EB2EBA",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7343:-:*:*:*:*:*:*:*",
"matchCriteriaId": "71B9C24B-2C10-4826-A91B-E1C60665FBBE",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7351:-:*:*:*:*:*:*:*",
"matchCriteriaId": "8A5FC951-9FAD-45B4-B7CF-D1A9482507F5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7351p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "9BB78361-9AAD-44BD-8B30-65715FEA4C06",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7352:-:*:*:*:*:*:*:*",
"matchCriteriaId": "A1540CCD-1ED8-4B4E-AD43-7DE2689D9A21",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7371:-:*:*:*:*:*:*:*",
"matchCriteriaId": "FA7576CB-A818-47A1-9A0D-6B8FD105FF08",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_73f3:-:*:*:*:*:*:*:*",
"matchCriteriaId": "678C5F58-8AE9-46FF-8F01-4CF394C87A2C",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7401:-:*:*:*:*:*:*:*",
"matchCriteriaId": "C05F1EF0-3576-4D47-8704-36E9FAB1D432",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7401p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "A2E41A87-7A39-4BB2-88E4-16DF0D81BFD2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7402:-:*:*:*:*:*:*:*",
"matchCriteriaId": "430C9955-0090-4166-8E90-D81C2AA7DE0D",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7402p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "92EBDDBF-37C2-4D09-B744-F78169B2C1C3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7413:-:*:*:*:*:*:*:*",
"matchCriteriaId": "D1766FF1-77A9-4293-B826-F6A8FBD7AFBF",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7443:-:*:*:*:*:*:*:*",
"matchCriteriaId": "4C474537-3006-41BA-8C3D-5C370E3ACECD",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7443p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "8E2B13CA-72F4-4CF6-9E12-62E6E9056A14",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7451:-:*:*:*:*:*:*:*",
"matchCriteriaId": "51C8CF00-8FC8-4206-9028-6F104699DE76",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7452:-:*:*:*:*:*:*:*",
"matchCriteriaId": "68ACF30E-62DD-4217-B7F0-4A0FFF47E8EF",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7453:-:*:*:*:*:*:*:*",
"matchCriteriaId": "241E39FF-FE66-444C-A4C2-3D28C45341BE",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_74f3:-:*:*:*:*:*:*:*",
"matchCriteriaId": "02D08121-DC57-47D7-8214-23A209F0AF08",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7501:-:*:*:*:*:*:*:*",
"matchCriteriaId": "4E8BAB73-6F45-49AB-8F00-49A488006F3E",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7502:-:*:*:*:*:*:*:*",
"matchCriteriaId": "49BBC687-5C3C-4843-A028-B8BE29D1E302",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7502p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "563708A3-7C51-4693-B02D-9A25A639FE42",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7513:-:*:*:*:*:*:*:*",
"matchCriteriaId": "F8264DF4-47B4-4716-AE89-44AFA870D385",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7532:-:*:*:*:*:*:*:*",
"matchCriteriaId": "1EDABE45-F529-453C-92DC-BF7747CEEC0E",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7542:-:*:*:*:*:*:*:*",
"matchCriteriaId": "BC94B03B-A7FE-47AE-969D-FFEF278A7A9B",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7543:-:*:*:*:*:*:*:*",
"matchCriteriaId": "52544912-FAA3-4025-A5FD-151B21CEC53B",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7543p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "77A0A47B-74A1-4731-92A8-BC10FFE58ECF",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7551:-:*:*:*:*:*:*:*",
"matchCriteriaId": "1AAB403A-5A36-4DC3-A187-99127CF77BA7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7551p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "01BE5D42-1C62-4381-89E0-8F3264F696EC",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7552:-:*:*:*:*:*:*:*",
"matchCriteriaId": "7A6C7497-1B63-490F-B8EA-D9F3CB790952",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_75f3:-:*:*:*:*:*:*:*",
"matchCriteriaId": "EBF0AFED-588A-4EFB-8C90-9280BC3A6720",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7601:-:*:*:*:*:*:*:*",
"matchCriteriaId": "168076CD-1E6D-4328-AB59-4C1A90735AC4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7642:-:*:*:*:*:*:*:*",
"matchCriteriaId": "1EDF8A1E-B259-43D0-A56C-8C2BB688A32C",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7643:-:*:*:*:*:*:*:*",
"matchCriteriaId": "98E1D79D-0CB0-4FD9-8A82-27CDFBFE07B2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7662:-:*:*:*:*:*:*:*",
"matchCriteriaId": "3E8C6528-9100-41D2-88A2-FFEABAB8F86A",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7663:-:*:*:*:*:*:*:*",
"matchCriteriaId": "A7DFCB62-6CDF-4AD2-9265-1887E5780CA5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7702:-:*:*:*:*:*:*:*",
"matchCriteriaId": "8AC99346-DBF1-4060-8E6B-35D315944ADA",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7702p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "72C86198-0BD4-42E1-974B-70A49F82C411",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7713:-:*:*:*:*:*:*:*",
"matchCriteriaId": "4D698D3E-BB05-4C65-90F4-8DAE275CD6A4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7713p:-:*:*:*:*:*:*:*",
"matchCriteriaId": "2299ED50-B4D2-4BB3-AD87-56D552B84AE1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7742:-:*:*:*:*:*:*:*",
"matchCriteriaId": "88F4A126-B4A6-480A-9DD7-7F68714DFB49",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7763:-:*:*:*:*:*:*:*",
"matchCriteriaId": "4F900BDD-F094-41A6-9A23-31F53DBA95D4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7f32:-:*:*:*:*:*:*:*",
"matchCriteriaId": "E25652AB-E243-4C40-BE12-AB53AF52CD61",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7f52:-:*:*:*:*:*:*:*",
"matchCriteriaId": "87543FB4-658A-4300-9DC9-836AC1D4BCFB",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7f72:-:*:*:*:*:*:*:*",
"matchCriteriaId": "07B3C659-C31A-4F82-9587-9F8A943F637D",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_7h12:-:*:*:*:*:*:*:*",
"matchCriteriaId": "89FAAD8C-6DD1-408D-849B-0CE707321B13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_embedded_3101:-:*:*:*:*:*:*:*",
"matchCriteriaId": "839C6991-D387-471D-9112-C79677D5A5AB",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_embedded_3151:-:*:*:*:*:*:*:*",
"matchCriteriaId": "3480338B-290F-4E9C-88F9-A4160853B9BD",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_embedded_3201:-:*:*:*:*:*:*:*",
"matchCriteriaId": "6943C2EC-1555-40B8-9533-BBB6572E9073",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_embedded_3251:-:*:*:*:*:*:*:*",
"matchCriteriaId": "44A54822-42B0-47B4-A080-416D5C8AC20C",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_embedded_3255:-:*:*:*:*:*:*:*",
"matchCriteriaId": "2F8DDDB3-E4B0-4354-955F-E2196E404970",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_embedded_3351:-:*:*:*:*:*:*:*",
"matchCriteriaId": "4C3B6175-0366-473D-A82F-E3F1373C74F5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:amd:epyc_embedded_3451:-:*:*:*:*:*:*:*",
"matchCriteriaId": "C38BB8F3-11AD-48C3-B751-AF93E3EA6138",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the AMD SEV/SEV-ES feature, memory can be rearranged in the guest address space that is not detected by the attestation mechanism which could be used by a malicious hypervisor to potentially lead to arbitrary code execution within the guest VM if a malicious administrator has access to compromise the server hypervisor."
},
{
"lang": "es",
"value": "En la funcionalidad SEV/SEV-ES de AMD, la memoria puede ser reorganizada en el espacio de direcciones del invitado que no es detectado por el mecanismo de certificaci\u00f3n que podr\u00eda ser utilizado por un hypervisor malicioso para conllevar potencialmente a una ejecuci\u00f3n de c\u00f3digo arbitraria dentro de la VM invitada si un administrador malicioso tiene acceso para comprometer el hypervisor del servidor"
}
],
"id": "CVE-2021-26311",
"lastModified": "2024-11-21T05:56:04.090",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "COMPLETE",
"baseScore": 9.0,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
"version": "2.0"
},
"exploitabilityScore": 8.0,
"impactScore": 10.0,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.2,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-05-13T12:15:07.597",
"references": [
{
"source": "psirt@amd.com",
"tags": [
"Vendor Advisory"
],
"url": "https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1004"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1004"
}
],
"sourceIdentifier": "psirt@amd.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-77"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2026-03-27T14:30:02+00:00",
"cve": "CVE-2021-26311",
"id": "CVE-2021-26311",
"initial_release_date": "2021-05-11T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "AMD Secure Encrypted Virtualization",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-26311.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "critical",
"current_release_date": "2025-02-17T05:40:20Z",
"cve": "CVE-2021-26311",
"id": "CVE-2021-26311",
"initial_release_date": "2023-02-15T03:44:52Z",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2021-26311",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-26311.json",
"version": "5"
}
}
}
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…
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…