{"id":"CVE-2021-45099","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-45099","generatedAt":"2026-10-27T19:57:30.216Z","title":"NOTE: the vendor does not agree that this is a vulnerability; however, addon.stdin was removed as a defense-in-depth measure against complex social engineering situations","description":"The addon.stdin service in addon-ssh (aka Home Assistant Community Add-on: SSH & Web Terminal) before 10.0.0 has an attack surface that requires social engineering. NOTE: the vendor does not agree that this is a vulnerability; however, addon.stdin was removed as a defense-in-depth measure against complex social engineering situations","published":"2021-12-16T05:15:09.000Z","lastModified":"2026-06-17T04:13:10.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":[],"affected":["ssh \\& web terminal project/ssh \\& web terminal"],"epss":{"score":0.01336,"percentile":0.71012,"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 (1.34%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://gist.github.com/Eriner/0872628519f70556d2c26c83439a9f67","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/hassio-addons/addon-ssh/releases/tag/v10.0.0","tags":["Release Notes","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://gist.github.com/Eriner/0872628519f70556d2c26c83439a9f67","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/hassio-addons/addon-ssh/releases/tag/v10.0.0","tags":["Release Notes","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-45099","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."}