CVE-2019-6453

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).

• CWE-88

• https://github.com/proofofcalc/cve-2019-6453-pocExploit, Third Party Advisory
• https://proofofcalc.com/advisories/20190218.txtThird Party Advisory
• https://proofofcalc.com/cve-2019-6453-mIRC/Exploit, Third Party Advisory
• https://twitter.com/proofofcalc/status/1097518413143003136Exploit, Third Party Advisory
• https://www.exploit-db.com/exploits/46392/Exploit, Third Party Advisory, VDB Entry
• https://www.mirc.com/news.htmlProduct
• https://github.com/proofofcalc/cve-2019-6453-pocExploit, Third Party Advisory
• https://proofofcalc.com/advisories/20190218.txtThird Party Advisory
• https://proofofcalc.com/cve-2019-6453-mIRC/Exploit, Third Party Advisory
• https://twitter.com/proofofcalc/status/1097518413143003136Exploit, Third Party Advisory
• https://www.exploit-db.com/exploits/46392/Exploit, Third Party Advisory, VDB Entry
• https://www.mirc.com/news.htmlProduct

Published

Feb 18, 2019

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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