# CVE-2026-47703

## Summary

- **CVE ID:** CVE-2026-47703
- **Severity:** MEDIUM
- **CVSS Score:** 6.3 (CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-330, CWE-346
- **Published:** Jul 15, 2026
- **Last Modified:** Jul 15, 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.

## Affected Products

- AdguardTeam — AdGuardHome (< 0.107.75)

## References

- [CNA](https://github.com/AdguardTeam/AdGuardHome/security/advisories/GHSA-xgx4-4h9w-53pv)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.12%
- **EPSS Percentile:** 2.3

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._