CVE-2026-40012

Publication date 25 June 2026

Last updated 29 June 2026

Ubuntu priority

Cvss 3 Severity Score

ECS zero scoped answers are stored in the packet cache while they should not. This impacts only configurations that have ECS enabled;

Show unmaintained releases

Package	Ubuntu Release	Status
pdns-recursor	26.04 LTS resolute	Needs evaluation
	25.10 questing	Ignored end of life, was needs-triage
	24.04 LTS noble	Needs evaluation
	22.04 LTS jammy	Needs evaluation
	20.04 LTS focal	Needs evaluation
	18.04 LTS bionic	Needs evaluation

CVSS version: CVSS v3.0

Base score 5.3 · Medium

Base metrics

Scores

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N