PatchTheCVECVE-2011-5282: mIRC prior to 7.22 has a message leak because chopping of outbound messages is mishandled.
CVE-2011-5282 is a medium-severity flaw (CVSS 5.3) affecting mirc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
mIRC prior to 7.22 has a message leak because chopping of outbound messages is mishandled.
Why this priority
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.3 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.1% (top 35%) |
| CISA exploited list | No |
| Weakness | CWE-200 |
| Published | 2020-01-21 |
| Last modified | 2026-06-16 |
Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2011-5282?
mirc: upgrade to 7.22. Exact commands for each OS are on this page.
Is CVE-2011-5282 being exploited?
CVE-2011-5282 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2011-5282 affect?
CVE-2011-5282 affects mirc. Severity is medium (CVSS 5.3). mIRC prior to 7.22 has a message leak because chopping of outbound messages is mishandled.
How urgent is CVE-2011-5282?
Priority 40/100. Remotely exploitable, no login, no user action
Related CVEs
- CVE-2019-6453 HIGH 8.1 UPGRADE mIRC before 7.55 allows remote command execution by using argument injection through custom URI protocol handl
- CVE-2008-7314 HIGH 7.5 UPGRADE mIRC before 6.35 allows attackers to cause a denial of service (crash) via a long nickname.