CVE-2026-47703

MediumCVSS 5.3/10Last modified Oct 24, 2026

Description

AdGuard Home is a network-wide software for blocking ads and tracking. Prior to 0.107.75, AdGuard Home's client-triggered DoQ forwarding path to a udp:// upstream reduced backend UDP DNS state by producing dns_id=0 or txid=0 and exposed a quoted-port ICMP source-port oracle, weakening DNS response matching for forwarded queries. This issue is fixed in version 0.107.75.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Weakness enumeration

CWE-330CWE-346

Affected software

No affected versions have been published.

Timeline

Published
Jul 15, 2026
Last modified
Oct 24, 2026
NVD status
Analyzed

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CVE-2026-47703: Medium severity, CVSS 5.3 | Vulnix