Fiche vulnérabilité
CVE-2026-41292 : faille élevée nlnetlabs unbound (CVSS 7.5)
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).
En bref
- Sévérité
- Élevée (CVSS 7.5)
- Vecteur CVSS
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Exploitation active
- Non signalée par la CISA
- Publication
- 20 mai 2026
- Dernière mise à jour
- 26 août 2026
Produits concernés
- nlnetlabs unbound
Références
- Fiche CVE-2026-41292 sur le NVD (NIST)
- nlnetlabs.nl/downloads/unbound/CVE-2026-41292.txt
- access.redhat.com/errata/RHSA-2026:24013
- access.redhat.com/errata/RHSA-2026:36320
- access.redhat.com/errata/RHSA-2026:36777
- access.redhat.com/errata/RHSA-2026:37282
- access.redhat.com/errata/RHSA-2026:54769
- access.redhat.com/security/cve/CVE-2026-41292
- bugzilla.redhat.com/show_bug.cgi
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41292.json