{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2024-21977", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-21977", "idYear": 2024, "status": "PUBLISHED", "publishedAt": "2025-09-05T12:58:39.312Z", "updatedAt": "2025-09-05T13:35:08.152Z", "importedAt": "2026-10-24T01:57:07.518Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": null, "summary": "Incomplete cleanup after loading a CPU microcode patch may allow a privileged attacker to degrade the entropy of the RDRAND instruction, potentially resulting in loss of integrity for SEV-SNP guests.", "affected": [ { "vendor": "AMD", "product": "AMD EPYC™ 7003 Series Processors", "defaultStatus": "affected", "versions": [ { "version": "MilanPI 1.0.0.D", "status": "unaffected" } ] }, { "vendor": "AMD", "product": "AMD EPYC™ 9004 Series Processors", "defaultStatus": "affected", "versions": [ { "version": "GenoaPI 1.0.0.C", "status": "unaffected" } ] }, { "vendor": "AMD", "product": "AMD EPYC™ 8004 Series Processors", "defaultStatus": "affected", "versions": [ { "version": "GenoaPI 1.0.0.C", "status": "unaffected" } ] }, { "vendor": "AMD", "product": "AMD Ryzen™ Threadripper™ PRO 5000 WX-Series Processors", "defaultStatus": "affected", "versions": [ { "version": "ChagallWSPI-sWRX8 1.0.0.8", "status": "unaffected" } ] }, { "vendor": "AMD", "product": "AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics", "defaultStatus": "affected", "versions": [ { "version": "CezannePI-FP6_1.0.1.1", "status": "unaffected" } ] }, { "vendor": "AMD", "product": "AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics", "defaultStatus": "affected", "versions": [ { "version": "RembrandtPI-FP7/FP7r2_1.0.0.B", "status": "unaffected" } ] }, { "vendor": "AMD", "product": "AMD Ryzen™ 5000 Series Desktop Processors", "defaultStatus": "affected", "versions": [ { "version": "ComboAM4v2 1.2.0.Cb", "status": "unaffected" } ] }, { "vendor": "AMD", "product": "AMD Ryzen™ 7000 Series Desktop Processors", "defaultStatus": "affected", "versions": [ { "version": "ComboAM5 1.2.0.1", "status": "unaffected" } ] }, { "vendor": "AMD", "product": "AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics", "defaultStatus": "affected", "versions": [ { "version": "PhoenixPI-FP8-FP7_1.1.0.3", "status": "unaffected" } ] }, { "vendor": "AMD", "product": "AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics", "defaultStatus": "affected", "versions": [ { "version": "RembrandtPI-FP7/FP7r2_1.0.0.B", "status": "unaffected" } ] }, { "vendor": "AMD", "product": "AMD Ryzen™ 7045 Series Mobile Processors with Radeon™ Graphics", "defaultStatus": "affected", "versions": [ { "version": "DragonRangeFL1 1.0.0.3e", "status": "unaffected" } ] }, { "vendor": "AMD", "product": "AMD Ryzen™ Threadripper™ PRO 3000 WX-Series Processors", "defaultStatus": "affected", "versions": [ { "version": "ChagallWSPI-sWRX8 1.0.0.8", "status": "unaffected" } ] }, { "vendor": "AMD", "product": "AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics", "defaultStatus": "affected", "versions": [ { "version": "CezannePI-FP6_1.0.1.1", "status": "unaffected" } ] }, { "vendor": "AMD", "product": "AMD Ryzen™ 8000 Series Desktop Processors", "defaultStatus": "affected", "versions": [ { "version": "ComboAM5 1.2.0.1", "status": "unaffected" } ] }, { "vendor": "AMD", "product": "AMD EPYC™ Embedded 7003 Series Processors", "defaultStatus": "affected", "versions": [ { "version": "EmbMilanPI-SP3 1.0.0.9", "status": "unaffected" } ] }, { "vendor": "AMD", "product": "AMD EPYC™ Embedded 9004 Series Processors", "defaultStatus": "affected", "versions": [ { "version": "EmbGenoaPI-SP5 1.0.0.9", "status": "unaffected" } ] }, { "vendor": "AMD", "product": "AMD Ryzen™ Embedded 8000 Series Processors", "defaultStatus": "affected", "versions": [ { "version": "EmbeddedPhoenixPI-FP7r2_1.2.0.0", "status": "unaffected" } ] }, { "vendor": "AMD", "product": "AMD Ryzen™ Embedded 7000 Series Processors", "defaultStatus": "affected", "versions": [ { "version": "EmbeddedAM5PI 1.0.0.3", "status": "unaffected" } ] }, { "vendor": "AMD", "product": "AMD Ryzen™ Embedded 5000 Series Processors", "defaultStatus": "affected", "versions": [ { "version": "EmbAM4PI 1.0.0.7", "status": "unaffected" } ] }, { "vendor": "AMD", "product": "AMD Ryzen™ Embedded V3000 Series Processors", "defaultStatus": "affected", "versions": [ { "version": "Embedded-PI_FP7r2 100A", "status": "unaffected" } ] } ] } } }