Is CVE-2014-4049 in the CISA KEV catalog?

No. CVE-2014-4049 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2014-4049?

CVE-2014-4049 has a CVSS v2 base score of 5.1 (MEDIUM).

What is the EPSS score for CVE-2014-4049?

CVE-2014-4049 has an EPSS score of 10.91% (95th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2014-4049

MEDIUMEPSS 95th pctl

5.1

CVSS v2

NVD

Description

Heap-based buffer overflow in the php_parserr function in ext/standard/dns.c in PHP 5.6.0beta4 and earlier allows remote servers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted DNS TXT record, related to the dns_get_record function.

CWE-119Buffer Overflow

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

10.91%probability of exploitation in 30 days

95thpercentile

Very high risk: more likely to be exploited than 95% 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 2026-05-06.