{"id":"CVE-2021-26409","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-26409","generatedAt":"2026-10-28T01:51:27.669Z","title":"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.","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","published":"2023-01-11T08:15:12.000Z","lastModified":"2026-06-17T03:43:21.000Z","status":"Modified","sourceIdentifier":"psirt@amd.com","cvss":{"version":"3.1","score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-120"],"affected":["amd/milanpi firmware"],"epss":{"score":0.00194,"percentile":0.0904,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.19%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032","tags":["Vendor Advisory"],"source":"psirt@amd.com"},{"url":"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-26409","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}