How severe is CVE-2019-6445?

CVE-2019-6445 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2019-6445 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-6445?

CVE-2019-6445 affects Ntpsec. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-6445?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-6445 published?

CVE-2019-6445 was published on 2019-01-16 and last updated on 2026-06-17.

CVE-2019-6445

CVE-2019-6445 is a medium-severity vulnerability in Ntpsec with a CVSS 3.x base score of 6.5. Its EPSS exploit-prediction score of 14% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-476.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 14% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Ntpsec
Published: 2019-01-16
Last modified: 2026-06-17

Description

An issue was discovered in NTPsec before 1.1.3. An authenticated attacker can cause a NULL pointer dereference and ntpd crash in ntp_control.c, related to ctl_getitem.

Frequently asked questions

What is CVE-2019-6445?: An issue was discovered in NTPsec before 1.1.3. An authenticated attacker can cause a NULL pointer dereference and ntpd crash in ntp_control.c, related to ctl_getitem.
How severe is CVE-2019-6445?: CVE-2019-6445 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2019-6445 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-6445?: CVE-2019-6445 affects Ntpsec. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-6445?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-6445 published?: CVE-2019-6445 was published on 2019-01-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ntpsec:ntpsec:*:*:*:*:*:*:*:*

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