CVE-2021-33586
4.3
MEDIUM
CVSS 3.1
EPSS 0.19%
Description
InspIRCd 3.8.0 through 3.9.x before 3.10.0 allows any user (able to connect to the server) to access recently deallocated memory, aka the "malformed PONG" issue.
How to fix CVE-2021-33586
To remediate CVE-2021-33586, upgrade the affected package to a fixed version below.
- Debian/inspircd—upgrade to 3.8.1-2 or later
Is CVE-2021-33586 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 3.8.1-2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |