Is CVE-2015-4620 in the CISA KEV catalog?

No. CVE-2015-4620 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-4620?

CVE-2015-4620 has a CVSS v2 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2015-4620?

CVE-2015-4620 has an EPSS score of 37.87% (98th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2015-4620

HIGHEPSS 98th pctl

7.8

CVSS v2

NVD

Description

name.c in named in ISC BIND 9.7.x through 9.9.x before 9.9.7-P1 and 9.10.x before 9.10.2-P2, when configured as a recursive resolver with DNSSEC validation, allows remote attackers to cause a denial of service (REQUIRE assertion failure and daemon exit) by constructing crafted zone data and then making a query for a name in that zone.

CWE-17

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

37.87%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% 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.