CVE-2023-26249
7.5 · HIGHOverview
CVE-2023-26249 is a high-severity vulnerability affecting nic knot_resolver. It was published on February 21, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from nic. Update knot_resolver to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| nic | knot_resolver | >= 0, < 5.6.0 | Affected |
Frequently Asked Questions
What is CVE-2023-26249?
CVE-2023-26249 is a high-severity vulnerability affecting nic knot_resolver. It was published on February 21, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2023-26249?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2023-26249?
Check the references section for vendor advisories and patches from nic. Update knot_resolver to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2023-26249?
CyberStrike's AI-powered security agents can automatically detect CVE-2023-26249 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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