CVE-2026-47703

VendoradguardProductadguardhomeDiscoveredJul 15, 2026UpdatedOct 24, 2026

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.

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CVSS v3.1

5.3 MEDIUM

EPSS

0.14%

probability of exploitation in 30 days

CISA KEV

Not listed

no confirmed exploitation reported

News coverage

sources referencing this CVE

Related IOCs

seen in the same coverage

EPSS Trend

Aug 16, 2026 → Sep 25, 2026

▲ 0.02pp

0.12% → 0.14% over 2 tracked changes

CVSS v3.1 Detail

Attack VectorNETWORK

Attack ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

ScopeUNCHANGED

ConfidentialityNONE

IntegrityLOW

AvailabilityNONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Connections

3 relationships

Timeline

disclosure → media coverage

Jul 15, 2026

Disclosure — published as a CVE record. · last revised by NVD Oct 24, 2026