Is CVE-2015-5219 in the CISA KEV catalog?

No. CVE-2015-5219 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-5219?

CVE-2015-5219 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2015-5219?

CVE-2015-5219 has an EPSS score of 5.84% (92th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2015-5219?

Upgrade ntp on debian 11 to 1:4.2.8p3+dfsg-1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2015-5219

HIGHEPSS 92th pctl

7.5

CVSS v3

NVD

Description

The ULOGTOD function in ntp.d in SNTP before 4.2.7p366 does not properly perform type conversions from a precision value to a double, which allows remote attackers to cause a denial of service (infinite loop) via a crafted NTP packet.

CWE-704

How to fix

Remediation Available

ntpDebian

Fixed in:1:4.2.8p3+dfsg-1CVE-2015-5219

ntpUbuntu

Fixed in:1:4.2.6.p5+dfsg-3ubuntu2.14.04.5USN-2783-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

5.84%probability of exploitation in 30 days

92ndpercentile

High risk: more likely to be exploited than 92% 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 2026-05-13.