CVE-2026-47703
AdGuard Home: DoQ-to-UDP State Reduction and Source-Port Oracle
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-330 CWE-346 |
| Vendor | adguardteam |
| Product | adguardhome |
| Published | Jul 15, 2026 |
| Last Updated | Jul 15, 2026 |
Stay Ahead of the Next One
Get instant alerts for adguardteam adguardhome
Be the first to know when new unknown vulnerabilities affecting adguardteam adguardhome are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
AdguardTeam / AdGuardHome
< 0.107.75