How severe is CVE-2023-46317?

CVE-2023-46317 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-46317 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-46317?

CVE-2023-46317 affects Nic Knot Resolver. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-46317?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-46317 published?

CVE-2023-46317 was published on 2023-10-22 and last updated on 2026-06-17.

CVE-2023-46317

CVE-2023-46317 is a high-severity vulnerability in Nic Knot Resolver with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Nic Knot Resolver
Published: 2023-10-22
Last modified: 2026-06-17

Description

Knot Resolver before 5.7.0 performs many TCP reconnections upon receiving certain nonsensical responses from servers.

Frequently asked questions

What is CVE-2023-46317?: Knot Resolver before 5.7.0 performs many TCP reconnections upon receiving certain nonsensical responses from servers.
How severe is CVE-2023-46317?: CVE-2023-46317 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-46317 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-46317?: CVE-2023-46317 affects Nic Knot Resolver. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-46317?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-46317 published?: CVE-2023-46317 was published on 2023-10-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:nic:knot_resolver:*:*:*:*:*:*:*:*

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