{"cve":"CVE-2026-47703","nvd":{"published":"2026-07-15T17:16:48.540","modified":"2026-10-24T21:10:00.130","status":"Analyzed","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.","cvss_v4":{"vector":"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","score":6.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3},"cwes":["CWE-330","CWE-346"],"references":["https://github.com/AdguardTeam/AdGuardHome/security/advisories/GHSA-xgx4-4h9w-53pv","https://github.com/AdguardTeam/AdGuardHome/security/advisories/GHSA-xgx4-4h9w-53pv"],"products":["adguard:adguardhome"],"source":"nvd","synced_at":"2026-10-25T17:50:08.599881581+00:00"},"epss":{"cve":"CVE-2026-47703","score":0.00143,"percentile":0.0359,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-xgx4-4h9w-53pv","url":"https://osv.dev/vulnerability/GHSA-xgx4-4h9w-53pv","summary":"AdGuard Home: DoQ-to-UDP State Reduction and Source-Port Oracle","modified":"2026-07-20T19:15:27.484617789Z","packages":[{"ecosystem":"Go","name":"github.com/AdguardTeam/AdGuardHome","purl":"pkg:golang/github.com/AdguardTeam/AdGuardHome","ranges":["<0.107.75"],"fixed":["0.107.75"]},{"ecosystem":"Go","name":"github.com/AdguardTeam/dnsproxy","purl":"pkg:golang/github.com/AdguardTeam/dnsproxy","ranges":["<0.81.3"],"fixed":["0.81.3"]}]},{"id":"GO-2026-5756","url":"https://osv.dev/vulnerability/GO-2026-5756","summary":"AdGuard Home: DoQ-to-UDP State Reduction and Source-Port Oracle in github.com/AdguardTeam/AdGuardHome","modified":"2026-06-25T23:01:41.268660410Z","packages":[{"ecosystem":"Go","name":"github.com/AdguardTeam/AdGuardHome","purl":"pkg:golang/github.com/AdguardTeam/AdGuardHome","ranges":["<0.107.75"],"fixed":["0.107.75"]},{"ecosystem":"Go","name":"github.com/AdguardTeam/dnsproxy","purl":"pkg:golang/github.com/AdguardTeam/dnsproxy","ranges":["<0.81.3"],"fixed":["0.81.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}