CVE-2026-47703

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/AdguardTeam/AdGuardHome/security/advisories/GHSA-xgx4-4h9w-53pv	Exploit Vendor Advisory
https://github.com/AdguardTeam/AdGuardHome/security/advisories/GHSA-xgx4-4h9w-53pv	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:adguard:adguardhome:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-07-15 17:16

Updated : 2026-07-30 14:29

NVD link : CVE-2026-47703

Mitre link : CVE-2026-47703

CVE.ORG link : CVE-2026-47703

JSON object : View

Products Affected

adguard

adguardhome

CWE

CWE-330

Use of Insufficiently Random Values

CWE-346

Origin Validation Error

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