What is CVE-2023-26249?

CVE-2023-26249 is a high-severity vulnerability in Nic Knot_resolver, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2023-02-21.

How severe is CVE-2023-26249?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Nic Knot_resolver

CVE-2023-26249

Knot Resolver before 5.6.0 enables attackers to consume its resources, launching amplification attacks and potentially causing a denial of service. Specifically, a single client query may lead to a hundred TCP connection attempts if a DNS…

EPSS: 0.007 (48.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Nic Knot_resolver
N/a — versions n/a

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

cve@mitre.org (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2023-26249?: CVE-2023-26249 is a high-severity vulnerability in Nic Knot_resolver, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2023-02-21.
How severe is CVE-2023-26249?: High severity. CVSS v3 base score is 7.5 out of 10.