{"id":"CVE-2018-0272","aliases":["EUVD-2018-1095","GHSA-gg84-j6g5-hr53"],"status":"published","title":"A vulnerability in the Secure Sockets Layer (SSL) Engine of Cisco Firepower System Software could...","description":"A vulnerability in the Secure Sockets Layer (SSL) Engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to improper error handling while processing SSL traffic. An attacker could exploit this vulnerability by sending a large volume of crafted SSL traffic to the vulnerable device. A successful exploit could allow the attacker to degrade the device performance by triggering a persistent high CPU utilization condition. Cisco Bug IDs: CSCvh89340.","severity":{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01264,"percentile":0.69902,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-399","CWE-755"],"published":"2018-04-19T20:00:00Z","modified":"2026-06-17T01:30:22Z","products":[{"vendor":"cisco","product":"cisco firepower threat defense"},{"vendor":"cisco","product":"firepower"}],"references":[{"url":"http://www.securityfocus.com/bid/103925","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418-firepower","tags":["x_refsource_CONFIRM","x_transferred","Mitigation","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-0272"},{"url":"https://github.com/advisories/GHSA-gg84-j6g5-hr53"}],"sources":{"cve":[{"id":"CVE-2018-0272","description":"A vulnerability in the Secure Sockets Layer (SSL) Engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to improper error handling while processing SSL traffic. An attacker could exploit this vulnerability by sending a large volume of crafted SSL traffic to the vulnerable device. A successful exploit could allow the attacker to degrade the device performance by triggering a persistent high CPU utilization condition. Cisco Bug IDs: CSCvh89340.","status":"published","published":"2018-04-19T20:00:00Z","modified":"2024-11-29T15:14:35.281Z","cwes":["CWE-399"],"updated_at":"2026-11-02T14:35:12.596526Z"}],"euvd":[{"id":"EUVD-2018-1095","description":"A vulnerability in the Secure Sockets Layer (SSL) Engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to improper error handling while processing SSL traffic. An attacker could exploit this vulnerability by sending a large volume of crafted SSL traffic to the vulnerable device. A successful exploit could allow the attacker to degrade the device performance by triggering a persistent high CPU utilization condition. Cisco Bug IDs: CSCvh89340.","status":"published","published":"2018-04-19T20:00:00Z","modified":"2024-11-29T15:14:35Z","updated_at":"2026-11-03T00:04:44.439112Z"}],"ghsa":[{"id":"GHSA-gg84-j6g5-hr53","title":"A vulnerability in the Secure Sockets Layer (SSL) Engine of Cisco Firepower System Software could...","description":"A vulnerability in the Secure Sockets Layer (SSL) Engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to improper error handling while processing SSL traffic. An attacker could exploit this vulnerability by sending a large volume of crafted SSL traffic to the vulnerable device. A successful exploit could allow the attacker to degrade the device performance by triggering a persistent high CPU utilization condition. Cisco Bug IDs: CSCvh89340.","status":"published","published":"2022-05-13T01:35:29Z","modified":"2023-02-01T05:08:36Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-755"],"updated_at":"2026-11-02T14:50:48.855041Z"}],"nvd":[{"id":"CVE-2018-0272","description":"A vulnerability in the Secure Sockets Layer (SSL) Engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to improper error handling while processing SSL traffic. An attacker could exploit this vulnerability by sending a large volume of crafted SSL traffic to the vulnerable device. A successful exploit could allow the attacker to degrade the device performance by triggering a persistent high CPU utilization condition. Cisco Bug IDs: CSCvh89340.","status":"published","published":"2018-04-19T20:29:01.643Z","modified":"2026-06-17T01:30:22.013Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-399","CWE-755"],"updated_at":"2026-11-02T14:04:26.098615Z"}]}}