CVE-2019-6453mIRC before 7.55 allows remote command execution by using argument injection through custom URI protocol handlers. The attacker can…
- 8.1HighCVSS base score
- 54.6%Exploitation in 30 daysEPSS · top 1.0% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
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 exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it. A reference of the record is tagged as an exploit.
Show the exploits2
Exploit-DB1 entry
- mIRC < 7.55 - 'Custom URI Protocol Handlers' Remote Command Execution (Exploit-DB entry) (opens in a new tab)
EDB-ID 46392remote, windowspublished 18 Feb 2019Not verified
References tagged exploit1 reference
- 46392 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
- 33 days later
· 33 days later
Published
- 5 years later
· 5 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | High8.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 54.6% · top 1.0% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.
Affected products
n/a
- affected n/a
References
References6
- 46392 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- https://proofofcalc.com/advisories/20190218.txt (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/proofofcalc/cve-2019-6453-poc (opens in a new tab)x_refsource_MISCx_transferred
- https://www.mirc.com/news.html (opens in a new tab)x_refsource_MISCx_transferred
- https://proofofcalc.com/cve-2019-6453-mIRC/ (opens in a new tab)x_refsource_MISCx_transferred
- https://twitter.com/proofofcalc/status/1097518413143003136 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2019-16013 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2019-6453)Record last updated .