{"id":"CVE-2019-6453","aliases":["EUVD-2019-16013","GHSA-95vj-g5cr-7j53"],"status":"published","title":"mIRC before 7.55 allows remote command execution by using argument injection through custom URI...","description":"mIRC before 7.55 allows remote command execution by using argument injection through custom URI protocol handlers. The attacker can specify an irc:// URI that loads an arbitrary .ini file from a UNC share pathname. Exploitation depends on browser-specific URI handling (Chrome is not exploitable).","severity":{"version":"3.0","score":8.1,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.54571,"percentile":0.99032,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-88"],"published":"2019-02-18T15:00:00Z","modified":"2026-06-17T02:39:04Z","exploits":[{"source":"exploitdb","id":"EDB-46392","title":"mIRC \u003c 7.55 - 'Custom URI Protocol Handlers' Remote Command Execution","type":"remote","platform":"windows","date":"2019-02-18","url":"https://www.exploit-db.com/exploits/46392"},{"source":"pocgithub","id":"proofofcalc/cve-2019-6453-poc","title":"proofofcalc/cve-2019-6453-poc","date":"2019-02-18","url":"https://github.com/proofofcalc/cve-2019-6453-poc"},{"source":"pocgithub","id":"andripwn/mIRC-CVE-2019-6453","title":"andripwn/mIRC-CVE-2019-6453","date":"2019-07-18","url":"https://github.com/andripwn/mIRC-CVE-2019-6453"}],"products":[{"vendor":"mirc","product":"mirc"}],"references":[{"url":"https://www.exploit-db.com/exploits/46392/","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://proofofcalc.com/advisories/20190218.txt","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://github.com/proofofcalc/cve-2019-6453-poc","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://www.mirc.com/news.html","tags":["x_refsource_MISC","x_transferred","Product"]},{"url":"https://proofofcalc.com/cve-2019-6453-mIRC/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://twitter.com/proofofcalc/status/1097518413143003136","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-6453"},{"url":"https://github.com/advisories/GHSA-95vj-g5cr-7j53"}],"sources":{"cve":[{"id":"CVE-2019-6453","description":"mIRC before 7.55 allows remote command execution by using argument injection through custom URI protocol handlers. The attacker can specify an irc:// URI that loads an arbitrary .ini file from a UNC share pathname. Exploitation depends on browser-specific URI handling (Chrome is not exploitable).","status":"published","published":"2019-02-18T15:00:00Z","modified":"2024-08-04T20:23:20.891Z","updated_at":"2026-11-02T14:20:23.381621Z"}],"euvd":[{"id":"EUVD-2019-16013","description":"mIRC before 7.55 allows remote command execution by using argument injection through custom URI protocol handlers. The attacker can specify an irc:// URI that loads an arbitrary .ini file from a UNC share pathname. Exploitation depends on browser-specific URI handling (Chrome is not exploitable).","status":"published","published":"2019-02-18T15:00:00Z","modified":"2024-08-04T20:23:20Z","updated_at":"2026-11-03T03:06:49.204502Z"}],"ghsa":[{"id":"GHSA-95vj-g5cr-7j53","title":"mIRC before 7.55 allows remote command execution by using argument injection through custom URI...","description":"mIRC before 7.55 allows remote command execution by using argument injection through custom URI protocol handlers. The attacker can specify an irc:// URI that loads an arbitrary .ini file from a UNC share pathname. Exploitation depends on browser-specific URI handling (Chrome is not exploitable).","status":"published","published":"2022-05-13T01:22:42Z","modified":"2023-02-01T05:06:33Z","cvss":[{"version":"3.0","score":8.1,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-88"],"updated_at":"2026-11-02T14:50:22.333418Z"}],"nvd":[{"id":"CVE-2019-6453","description":"mIRC before 7.55 allows remote command execution by using argument injection through custom URI protocol handlers. The attacker can specify an irc:// URI that loads an arbitrary .ini file from a UNC share pathname. Exploitation depends on browser-specific URI handling (Chrome is not exploitable).","status":"published","published":"2019-02-18T15:29:00.247Z","modified":"2026-06-17T02:39:04.343Z","cvss":[{"version":"3.0","score":8.1,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-88"],"updated_at":"2026-11-02T14:05:04.689371Z"}]}}