Is CVE-2023-26249 actively exploited?

No active exploitation of CVE-2023-26249 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-26249 be exploited remotely?

Yes. CVE-2023-26249 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-26249?

CVE-2023-26249 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2023-26249

HIGH

CVE-2023-26249

CWE-770Published: February 21, 2023· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2023-26249 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.