CVE-2026-19630

Amplified resource exhaustion in inbound message processing

En bref

Sévérité: HIGH 7.5
EPSS: EPSS 0.45 % · centile 39 (2026-10-27)
État: PUBLISHED
Publiée: 2026-10-21
Mise à jour: 2026-10-21
Attribuée par: isc
Statut NVD: Awaiting Analysis

Description

In a BIND resolver, inbound DNS protocol messages with a particular structure will result in additional processing, with no limit imposed by BIND. A DNS message with a maliciously large number of such structures will cause BIND to consume disproportionate amounts of CPU time and memory during processing. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.29, 9.21.0 through 9.21.26, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.29-S1.

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)

Faiblesses (CWE)

CWE-407

Références européennes

ENISA EUVD · EUVD-2026-107252
GCVE · GCVE-0-2026-19630

Produits affectés

Produit	Versions
ISC · BIND 9	affected 9.11.0 ≤ 9.18.50 ; affected 9.20.0 ≤ 9.20.29 ; affected 9.21.0 ≤ 9.21.26 ; affected 9.11.3-S1 ≤ 9.18.50-S1 ; affected 9.20.9-S1 ≤ 9.20.29-S1

Références

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