Is CVE-2012-2213 in the CISA KEV catalog?

No. CVE-2012-2213 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2012-2213?

CVE-2012-2213 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2012-2213?

CVE-2012-2213 has an EPSS score of 12.31% (96th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2012-2213

MEDIUMEPSS 96th pctl

5.0

CVSS v2

NVD

Description

Squid 3.1.9 allows remote attackers to bypass the access configuration for the CONNECT method by providing an arbitrary allowed hostname in the Host HTTP header. NOTE: this issue might not be reproducible, because the researcher is unable to provide a squid.conf file for a vulnerable system, and the observed behavior is consistent with a squid.conf file that was (perhaps inadvertently) designed to allow access based on a "req_header Host" acl regex that matches www.uol.com.br

CWE-264

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

12.31%probability of exploitation in 30 days

96thpercentile

Very high risk: more likely to be exploited than 96% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.