{"id":"CVE-2021-26409","aliases":["EUVD-2021-13215","GHSA-53r6-9q9v-359p"],"status":"published","title":"Insufficient bounds checking in SEV-ES may allow an attacker to corrupt Reverse Map table (RMP)...","description":"Insufficient bounds checking in SEV-ES may allow an attacker to corrupt Reverse Map table (RMP) memory, potentially resulting in a loss of SNP (Secure Nested Paging) memory integrity.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00194,"percentile":0.09217,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2023-01-10T20:56:47Z","modified":"2026-06-17T03:43:21Z","products":[{"vendor":"amd","product":"3rd gen epyc"},{"vendor":"amd","product":"milanpi_firmware"}],"references":[{"url":"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032","tags":["vendor-advisory","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26409"},{"url":"https://github.com/advisories/GHSA-53r6-9q9v-359p"}],"sources":{"cve":[{"id":"CVE-2021-26409","description":"Insufficient bounds checking in SEV-ES may allow an attacker to corrupt Reverse Map table (RMP) memory, potentially resulting in a loss of SNP (Secure Nested Paging) memory integrity.  \n\n","status":"published","published":"2023-01-10T20:56:47.043Z","modified":"2025-04-09T14:52:43.998Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:32:57.033395Z"}],"euvd":[{"id":"EUVD-2021-13215","description":"Insufficient bounds checking in SEV-ES may allow an attacker to corrupt Reverse Map table (RMP) memory, potentially resulting in a loss of SNP (Secure Nested Paging) memory integrity.  \n\n","status":"published","published":"2023-01-10T20:56:47Z","modified":"2025-04-09T14:52:43Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T20:52:38.263259Z"}],"ghsa":[{"id":"GHSA-53r6-9q9v-359p","title":"Insufficient bounds checking in SEV-ES may allow an attacker to corrupt Reverse Map table (RMP)...","description":"Insufficient bounds checking in SEV-ES may allow an attacker to corrupt Reverse Map table (RMP) memory, potentially resulting in a loss of SNP (Secure Nested Paging) memory integrity.","status":"published","published":"2023-01-11T09:30:30Z","modified":"2023-02-03T05:04:26Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:53:33.273438Z"}],"nvd":[{"id":"CVE-2021-26409","description":"Insufficient bounds checking in SEV-ES may allow an attacker to corrupt Reverse Map table (RMP) memory, potentially resulting in a loss of SNP (Secure Nested Paging) memory integrity.  \n\n","status":"published","published":"2023-01-11T08:15:11.743Z","modified":"2026-06-17T03:43:21.097Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:07:07.323379Z"}]}}