Is CVE-2012-0053 in the CISA KEV catalog?

No. CVE-2012-0053 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2012-0053?

CVE-2012-0053 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2012-0053?

CVE-2012-0053 has an EPSS score of 82.76% (100th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2012-0053

MEDIUMEPSS 100th pctl

4.3

CVSS v2

NVD

Description

protocol.c in the Apache HTTP Server 2.2.x through 2.2.21 does not properly restrict header information during construction of Bad Request (aka 400) error documents, which allows remote attackers to obtain the values of HTTPOnly cookies via vectors involving a (1) long or (2) malformed header in conjunction with crafted web script.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

82.76%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% 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.