{"id":"CVE-2019-1978","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-1978","generatedAt":"2026-10-27T23:36:22.547Z","title":"A vulnerability in the stream reassembly component of Cisco Firepower Threat Defense Software, Cisco FirePOWER Services Software for ASA, and Cisco Firepower Management Center Software could allow an unauthenticated, remote attacker to bypass filtering…","description":"A vulnerability in the stream reassembly component of Cisco Firepower Threat Defense Software, Cisco FirePOWER Services Software for ASA, and Cisco Firepower Management Center Software could allow an unauthenticated, remote attacker to bypass filtering protections. The vulnerability is due to improper reassembly of traffic streams. An attacker could exploit this vulnerability by sending crafted streams through an affected device. An exploit could allow the attacker to bypass filtering and deliver malicious requests to protected systems that would otherwise be blocked.","published":"2019-11-05T20:15:12.000Z","lastModified":"2026-08-11T19:37:31.000Z","status":"Modified","sourceIdentifier":"psirt@cisco.com","cvss":{"version":"3.1","score":5.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N"},"cwe":["CWE-264","CWE-20"],"affected":["cisco/firepower services software for asa","cisco/secure firewall management center","cisco/secure firewall threat defense"],"epss":{"score":0.09382,"percentile":0.95367,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":false,"firstPublished":"2020-01-11","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":47902,"kind":"exploit","title":"Citrix Application Delivery Controller and Citrix Gateway - Remote Code Execution","url":"https://www.exploit-db.com/exploits/47902","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/webapps/47902.py","file":"exploits/multiple/webapps/47902.py","published":"2020-01-11","added":"2020-01-11","updated":"2020-01-11","author":"TrustedSec","type":"webapps","platform":"multiple","port":null,"verified":false,"codes":["CVE-2019-1978"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://github.com/trustedsec/cve-2019-19781/blob/cc0b7f56330c0bc61152df39b53c92fcf7ffa578/citrixmash.py"}]},"verdict":{"level":"high","text":"A public exploit is published in Exploit-DB, so the technical barrier is gone even though the severity is medium and EPSS is 9.4%. Treat it as high on anything reachable from the internet."},"changes":[],"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190816-ftd-srb","tags":["Vendor Advisory"],"source":"psirt@cisco.com"},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190816-ftd-srb","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-1978","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."}