{"id":"CVE-2021-27663","aliases":["EUVD-2021-14409","GHSA-7w94-337p-g84p"],"status":"published","title":"CEM Systems AC2000","description":"A vulnerability in versions 10.1 through 10.5 of Johnson Controls CEM Systems AC2000 allows a remote attacker to access to the system without adequate authorization. This issue affects: Johnson Controls CEM Systems AC2000 10.1; 10.2; 10.3; 10.4; 10.5.","severity":{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01669,"percentile":0.77113,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-285","CWE-863"],"published":"2021-08-30T16:37:41Z","modified":"2026-06-17T03:45:19Z","products":[{"vendor":"johnson controls","product":"cem systems ac2000"},{"vendor":"johnsoncontrols","product":"ac2000_firmware"}],"references":[{"url":"https://www.johnsoncontrols.com/cyber-solutions/security-advisories","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://us-cert.gov/ics/advisories/ICSA-21-238-01","tags":["third-party-advisory","x_refsource_CERT","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27663"},{"url":"https://github.com/advisories/GHSA-7w94-337p-g84p"}],"sources":{"cve":[{"id":"CVE-2021-27663","title":"CEM Systems AC2000","description":"A vulnerability in versions 10.1 through 10.5 of Johnson Controls CEM Systems AC2000 allows a remote attacker to access to the system without adequate authorization. This issue affects: Johnson Controls CEM Systems AC2000 10.1; 10.2; 10.3; 10.4; 10.5.","status":"published","published":"2021-08-30T16:37:41.273Z","modified":"2024-09-17T03:38:42.161Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-285"],"updated_at":"2026-11-02T14:33:04.679189Z"}],"euvd":[{"id":"EUVD-2021-14409","description":"A vulnerability in versions 10.1 through 10.5 of Johnson Controls CEM Systems AC2000 allows a remote attacker to access to the system without adequate authorization. This issue affects: Johnson Controls CEM Systems AC2000 10.1; 10.2; 10.3; 10.4; 10.5.","status":"published","published":"2021-08-30T16:37:41Z","modified":"2024-09-17T03:38:42Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","level":"high"}],"updated_at":"2026-11-03T00:28:29.877686Z"}],"ghsa":[{"id":"GHSA-7w94-337p-g84p","title":"A vulnerability in versions 10.1 through 10.5 of Johnson Controls CEM Systems AC2000 allows a...","description":"A vulnerability in versions 10.1 through 10.5 of Johnson Controls CEM Systems AC2000 allows a remote attacker to access to the system without adequate authorization. This issue affects: Johnson Controls CEM Systems AC2000 10.1; 10.2; 10.3; 10.4; 10.5.","status":"published","published":"2022-05-24T19:12:28Z","modified":"2023-01-30T05:02:07Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:46:33.666288Z"}],"nvd":[{"id":"CVE-2021-27663","description":"A vulnerability in versions 10.1 through 10.5 of Johnson Controls CEM Systems AC2000 allows a remote attacker to access to the system without adequate authorization. This issue affects: Johnson Controls CEM Systems AC2000 10.1; 10.2; 10.3; 10.4; 10.5.","status":"published","published":"2021-08-30T18:15:08.663Z","modified":"2026-06-17T03:45:19.17Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-285"],"updated_at":"2026-11-02T14:06:57.67549Z"}]}}