How severe is CVE-2023-43771?

CVE-2023-43771 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-43771 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-43771?

CVE-2023-43771 affects Mikebrady Not Quite Ptp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-43771?

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

When was CVE-2023-43771 published?

CVE-2023-43771 was published on 2023-09-22 and last updated on 2026-06-17.

CVE-2023-43771

CVE-2023-43771 is a medium-severity vulnerability in Mikebrady Not Quite Ptp with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Mikebrady Not Quite Ptp
Published: 2023-09-22
Last modified: 2026-06-17

Description

In nqptp-message-handlers.c in nqptp before 1.2.3, crafted packets received on the control port could crash the program.

Frequently asked questions

What is CVE-2023-43771?: In nqptp-message-handlers.c in nqptp before 1.2.3, crafted packets received on the control port could crash the program.
How severe is CVE-2023-43771?: CVE-2023-43771 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-43771 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-43771?: CVE-2023-43771 affects Mikebrady Not Quite Ptp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-43771?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-43771 published?: CVE-2023-43771 was published on 2023-09-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mikebrady:not_quite_ptp:*:*:*:*:*:*:*:*

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