Is CVE-2004-0657 in the CISA KEV catalog?

No. CVE-2004-0657 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2004-0657?

CVE-2004-0657 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2004-0657?

CVE-2004-0657 has an EPSS score of 2.85% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2004-0657?

Upgrade ntp on debian 11 to 4.0 or later.

CVE & CISA-KEV Catalog

CVE-2004-0657

MEDIUMEPSS 85th pctl

5.0

CVSS v2

NVD

Description

Integer overflow in the NTP daemon (NTPd) before 4.0 causes the NTP server to return the wrong date/time offset when a client requests a date/time that is more than 34 years away from the server's time.

CWE-190Integer Overflow

How to fix

Remediation Available

ntpDebian

Fixed in:4.0CVE-2004-0657

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

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

2.85%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Patch1

kb.cert.org

Third-Party Advisory2

Related Vulnerabilities

Other CWE-190 (Integer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix
CVE-2019-11477	High	7.5	99%	-	Fix
CVE-2023-44443	High	7.8	94%	-	Fix
CVE-2014-0569	High	9.3	90%	-	-
CVE-2017-3599	High	7.5	90%	-	Fix
CVE-2023-21716	Critical	9.8	82%	-	Fix

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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 2026-04-16.