CVE-2023-26249

7.5 highEPSS 0.7%

High (7.5) in nic knot resolver. EPSS 0.7% chance of exploitation in the next 30 days.

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 server closes connections without providing a response.

Severity

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 53% of CVEs (scores of 2026-10-31)
CWE: CWE-770
Published: 2023-02-21
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

nic:knot_resolver

References

https://www.knot-resolver.cz/2023-01-26-knot-resolver-5.6.0.html
https://www.knot-resolver.cz/2023-01-26-knot-resolver-5.6.0.html

Check your stack JSON