CVE-2026-11605
Unnecessary validation of DNSSEC signed records
HIGH 7.5
En bref
- Source
- NVD
- EPSS
- EPSS 0.67 % · centile 52 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- isc
- Statut NVD
- Undergoing Analysis
Description
The issue is a resource exhaustion vulnerability associated with DNSSEC validation. BIND always validates all RRSIG records in an answer, even if they are not strictly needed. A query to an authoritative server/zone which returns many valid but superfluous RRSIG records causes the validator to waste disproportionate CPU time. This issue affects BIND 9 versions 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, and 9.20.9-S1 through 9.20.24-S1.
Faiblesses (CWE)
Références
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | isc |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · security-officer@isc.org (Secondary) |
Références européennes
- ENISA EUVD · EUVD-2026-47707
- GCVE · GCVE-0-2026-11605
Produits affectés
| Produit | Versions |
|---|---|
| ISC · BIND 9 | affected 9.20.0 ≤ 9.20.24 ; affected 9.21.0 ≤ 9.21.23 ; affected 9.20.9-S1 ≤ 9.20.24-S1 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |