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).
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- mIRC < 7.55 - 'Custom URI Protocol Handlers' Remote Command Execution EDB-46392 · remote · Feb 18, 2019
GitHub 2 repositories
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proofofcalc/cve-2019-6453-poc ★ 48 · Feb 18, 2019
Proof of calc for CVE-2019-6453
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andripwn/mIRC-CVE-2019-6453 ★ 1 · Jul 18, 2019
Proof of calc for CVE-2019-6453
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.