CVE-2009-0159

CVE-2009-0159 is a medium-severity vulnerability in Ntp with a CVSS 2.0 base score of 6.8. Its EPSS exploit-prediction score of 13% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Description

Stack-based buffer overflow in the cookedprint function in ntpq/ntpq.c in ntpq in NTP before 4.2.4p7-RC2 allows remote NTP servers to execute arbitrary code via a crafted response.

Frequently asked questions

What is CVE-2009-0159?
Stack-based buffer overflow in the cookedprint function in ntpq/ntpq.c in ntpq in NTP before 4.2.4p7-RC2 allows remote NTP servers to execute arbitrary code via a crafted response.
How severe is CVE-2009-0159?
CVE-2009-0159 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2009-0159 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 13% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-0159?
CVE-2009-0159 primarily affects Ntp. In total, 29 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-0159?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-0159 published?
CVE-2009-0159 was published on 2009-04-14 and last updated on 2026-06-16.

References

Affected products (29)

More vulnerabilities in Ntp

All CVEs affecting Ntp →

Other CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities

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Threat intelligence

Threat-intel indicators referencing this CVE: