CVE-2021-41611

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

2.94% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 86.9% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-10-18 08:56Z5 YR AGO

Last updated

2024-08-04 03:15Z2 YR AGO

Reserved

2021-09-25

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-295Improper Certificate ValidationBase

Data version

5.1

Document digest

56cd96d35d545fd8024aa72b7d6e36d33dce73d70140e430db2180ca0d9fac30

• www.squid-cache.orghttp://www.squid-cache.org/Versions/v6/changesets/squid-6-43d6b5c81b88ec2256b430c69a872a1e4f324e4a.patchx_refsource_MISC
• github.comhttps://github.com/squid-cache/squid/security/advisories/GHSA-47m4-g3mv-9q5rx_refsource_CONFIRM
• lists.fedoraproject.orgFEDORA-2021-15d2f70a07https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CWQ2WKDWTSO47S3F6XJJ6HGG2ULWEAE4/vendor-advisoryx_refsource_FEDORA
• www.openwall.com[oss-security] 20211223 CVE-2021-44273: e2guardian did not validate TLS hostnameshttp://www.openwall.com/lists/oss-security/2021/12/23/2mailing-listx_refsource_MLIST