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CVE-2026-47703

AdGuard Home: DoQ-to-UDP State Reduction and Source-Port Oracle PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
AdguardTeam / AdGuardHomeaffected < 0.107.75

CWE

CWE-330, CWE-346

References

ADP enrichment

CISA-ADP

No English description supplied.