CVE-2026-81563

SVCB AliasMode additional-data error leaks qpcache references

HIGH 7.5

En bref

Source: NVD
EPSS: EPSS 0.57 % · centile 47 (2026-10-28)
État: PUBLISHED
Publiée: 2026-09-16 14:00 UTC
Mise à jour: 2026-09-17 17:47 UTC
Attribuée par: isc
Statut NVD: Awaiting Analysis

Description

A BIND resolver encountering an SVCB/HTTPS AliasMode record referencing 14 or more SVCB/HTTPS ServiceMode records may fail to properly deallocate internal resources. If this happens repeatedly, resource exhaustion will eventually prevent the resolver from performing new recursive lookups. This issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.18.11-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.

Faiblesses (CWE)

CWE-401 — Mémoire non libérée après sa durée de vie utile

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-2026-80770
GCVE · GCVE-0-2026-81563

Avis du CERT-FR

CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
CERTFR-2026-AVI-1376 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
CERTFR-2026-AVI-1192 — Multiples vulnérabilités dans ISC BIND · cert.ssi.gouv.fr

Produits affectés

Produit	Versions
ISC · BIND 9	affected 9.18.0 ≤ 9.18.50 ; affected 9.20.0 ≤ 9.20.27 ; affected 9.21.0 ≤ 9.21.25 ; affected 9.18.11-S1 ≤ 9.18.50-S1 ; affected 9.20.9-S1 ≤ 9.20.27-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
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
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