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...
- Published
- Feb 18, 2019
- Updated
- Aug 4, 2024
- Assigning CNA
- mitre
- Evidence observed
- Feb 18, 2019
Primary CVSS
nvd · CVSS 3.0
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HModerate · next 30 days
- Percentile
- 98.3%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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).
Sources
3Proof of calc for CVE-2019-6453
Proof of calc for CVE-2019-6453
Responsible use
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