Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AdguardTeam AdGuardHome — AdGuard Home: DoQ-to-UDP State Reduction and Source-Port Oracle
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
N H P N N L L N 6.3 .0012 2.4 —
AFFECTED
Product Versions Fixed
AdGuardHome < 0.107.75 – —
TIMELINE
May 19 Reserved by GitHub_M
Jul 15 EXPLOIT PUBLISHED — CVE-2026-47703 (AdguardTeam AdGuardHome). Public exploit reference added.
Jul 15 Published (CNA: GitHub_M)
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| May 19, 2026 | Reserved | Reserved by GitHub_M |
| July 15, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-47703 (AdguardTeam AdGuardHome). Public exploit reference added. |
| July 15, 2026 | Published | Published (CNA: GitHub_M) |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| AdguardTeam | AdGuardHome | — | < 0.107.75 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-47703 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.