CVE-2021-41611
7.5
HIGH
CVSS 3.1
EPSS 1.1%
Description
An issue was discovered in Squid 5.0.6 through 5.1.x before 5.2. When validating an origin server or peer certificate, Squid may incorrectly classify certain certificates as trusted. This problem allows a remote server to obtain security trust well improperly. This indication of trust may be passed along to clients, allowing access to unsafe or hijacked services.
How to fix CVE-2021-41611
To remediate CVE-2021-41611, upgrade the affected package to a fixed version below.
- —upgrade to 5.0.6-r2 or later
- —upgrade to 5.2-1 or later
Is CVE-2021-41611 being exploited?
Low — EPSS is 1.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 5.0.6-r2
- from 0, < 5.2-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |