VULNERABILITY INTELLIGENCE

CVE-2023-26249

CVSS score7.5 HIGH
EPSS probability0.71%
CISA KEVNot currently listed
Published2023-02-21
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

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.

Weakness classification

  • nvd@nist.gov: CWE-770
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-770

Primary references