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CVE-2026-41292

7.5 · HIGH

NLnet Labs Unbound up to and including version 1.25.0 is vulnerable to a degradation of service attack related to parsing long lists of incoming EDNS options.

Published May 20, 2026CWE-407EPSS 0.83%

Overview

CVE-2026-41292 is a high-severity vulnerability. It was published on May 20, 2026 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

NLnet Labs Unbound up to and including version 1.25.0 is vulnerable to a degradation of service attack related to parsing long lists of incoming EDNS options. An adversary sending queries with too many EDNS options can hold Unbound threads hostage while they are parsing and creating internal data structures for the options. Coordinated attacks can result in degradation and/or denial of service. Unbound 1.25.1 contains a patch with a fix to limit acceptable incoming EDNS options (100).

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

Refwww.nlnetlabs.nl/downloads/unbound/CVE-2026-41292.txtRefaccess.redhat.com/errata/RHSA-2026:24013Refaccess.redhat.com/errata/RHSA-2026:36320Refaccess.redhat.com/errata/RHSA-2026:36777Refaccess.redhat.com/errata/RHSA-2026:37282Refaccess.redhat.com/errata/RHSA-2026:54769Refaccess.redhat.com/security/cve/CVE-2026-41292Refbugzilla.redhat.com/show_bug.cgi?id=2480125Refsecurity.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41292.json

How CyberStrike helps

Frequently asked questions

What is CVE-2026-41292?

CVE-2026-41292 is a high-severity vulnerability. It was published on May 20, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-41292?

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-2026-41292?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2026-41292?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-41292 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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