{"id":"CVE-2020-8904","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-8904","generatedAt":"2026-10-28T05:28:25.644Z","title":"An arbitrary memory overwrite vulnerability in the trusted memory of Asylo exists in versions prior to 0.6.0.","description":"An arbitrary memory overwrite vulnerability in the trusted memory of Asylo exists in versions prior to 0.6.0. As the ecall_restore function fails to validate the range of the output_len pointer, an attacker can manipulate the tmp_output_len value and write to an arbitrary location in the trusted (enclave) memory. We recommend updating Asylo to version 0.6.0 or later.","published":"2020-08-12T19:15:15.000Z","lastModified":"2026-06-17T03:27:09.000Z","status":"Modified","sourceIdentifier":"cve-coordination@google.com","cvss":{"version":"3.1","score":9.6,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H"},"cwe":["CWE-823","CWE-119"],"affected":["google/asylo"],"epss":{"score":0.00232,"percentile":0.1405,"date":"2026-10-27","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 (0.23%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/google/asylo/commit/e582f36ac49ee11a21d23ad6a30c333092e0a94e","tags":["Patch","Third Party Advisory"],"source":"cve-coordination@google.com"},{"url":"https://github.com/google/asylo/commit/e582f36ac49ee11a21d23ad6a30c333092e0a94e","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-8904","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."}