CVE-2026-47703

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 98% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 5.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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 v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity53% × 45%
Exploitation0% × 40%
Automatability0% × 15%
EPSS PROB
0.1%
EPSS %ILE
3rd
KEV
Not listed

Published

June 4, 2026

Last Modified

July 30, 2026

Advisory Details (1)

Auto-updated Jul 15, 2026
Patch available. Sources: github.
githubMentions a patch (unverified)

DoQ-to-UDP State Reduction and Source-Port Oracle · Advisory · AdguardTeam/AdGuardHome · GitHub

https://github.com/AdguardTeam/AdGuardHome/security/advisories/GHSA-xgx4-4h9w-53pv

Vendor Advisories for CVE-2026-47703(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(2 across 1 ecosystem)
Go(2)
PackageVulnerable rangeFix by version rangeDependents
github.com/AdguardTeam/AdGuardHome—
  • every version up to 0.107.75: fixed in 0.107.75
—
github.com/AdguardTeam/dnsproxy—
  • every version up to 0.81.3: fixed in 0.81.3
—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 23× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:12 UTCEPSS rescore
  3. 2026-10-07 23:48 UTCEPSS rescore
  4. 2026-10-06 15:18 UTCEPSS rescore
  5. 2026-10-05 17:43 UTCEPSS rescore
  6. 2026-10-04 23:22 UTCEPSS rescore
  7. 2026-10-03 14:25 UTCEPSS rescore
  8. 2026-10-03 12:09 UTCOSV refresh
  9. 2026-10-01 19:50 UTCEPSS rescore
  10. 2026-09-30 15:03 UTCEPSS rescore
  11. 2026-09-28 13:51 UTCEPSS rescore
  12. 2026-09-27 13:48 UTCEPSS rescore
  13. 2026-09-26 15:59 UTCEPSS rescore
  14. 2026-09-26 00:27 UTCEPSS rescore
  15. 2026-09-23 17:53 UTCEPSS rescore
  16. 2026-09-20 20:16 UTCEPSS rescore
  17. 2026-09-18 19:28 UTCEPSS rescore
  18. 2026-09-16 14:08 UTCEPSS rescore
  19. 2026-09-16 05:15 UTCEPSS rescore
  20. 2026-09-14 05:20 UTCEG score recompute
  21. 2026-09-13 16:47 UTCEPSS rescore
  22. 2026-09-12 23:36 UTCOSV refresh
  23. 2026-09-11 14:53 UTCEPSS rescore
  24. 2026-09-10 09:35 UTCEPSS rescore
  25. 2026-09-08 22:00 UTCEPSS rescore
Show 69 more
  1. 2026-09-07 16:01 UTCEPSS rescore
  2. 2026-09-06 13:47 UTCEPSS rescore
  3. 2026-09-04 05:06 UTCEPSS rescore
  4. 2026-09-02 14:12 UTCEPSS rescore
  5. 2026-09-01 13:54 UTCEPSS rescore
  6. 2026-08-30 19:17 UTCEPSS rescore
  7. 2026-08-30 01:22 UTCEPSS rescore
  8. 2026-08-28 21:41 UTCEPSS rescore
  9. 2026-08-27 14:25 UTCEPSS rescore
  10. 2026-08-25 13:49 UTCEPSS rescore
  11. 2026-08-25 03:27 UTCEG score recompute
  12. 2026-08-23 12:41 UTCEG score recompute
  13. 2026-08-21 23:49 UTCEPSS rescore
  14. 2026-08-21 14:35 UTCEG score recompute
  15. 2026-08-20 22:55 UTCEPSS rescore
  16. 2026-08-20 09:55 UTCEG score recompute
  17. 2026-08-19 17:04 UTCEPSS rescore
  18. 2026-08-17 13:47 UTCEPSS rescore
  19. 2026-08-17 06:42 UTCEG score recompute
  20. 2026-08-16 14:56 UTCEPSS rescore
  21. 2026-08-16 03:05 UTCEG score recompute
  22. 2026-08-16 02:14 UTCEPSS rescore
  23. 2026-08-15 01:30 UTCEPSS rescore
  24. 2026-08-13 22:38 UTCEG score recompute
  25. 2026-08-13 22:00 UTCEPSS rescore
  26. 2026-08-12 13:51 UTCEPSS rescore
  27. 2026-08-12 11:12 UTCEG score recompute
  28. 2026-08-11 08:37 UTCEG score recompute
  29. 2026-08-11 00:00 UTCEPSS rescore
  30. 2026-08-10 06:23 UTCEG score recompute
  31. 2026-08-09 13:46 UTCEPSS rescore
  32. 2026-08-09 04:10 UTCEG score recompute
  33. 2026-08-08 16:37 UTCEPSS rescore
  34. 2026-08-08 01:57 UTCEG score recompute
  35. 2026-08-06 23:44 UTCEG score recompute
  36. 2026-08-06 13:47 UTCEPSS rescore
  37. 2026-08-05 20:28 UTCEG score recompute
  38. 2026-08-05 19:17 UTCEPSS rescore
  39. 2026-08-04 15:10 UTCEPSS rescore
  40. 2026-08-04 10:39 UTCEPSS rescore
  41. 2026-08-04 01:19 UTCEG score recompute
  42. 2026-08-03 10:36 UTCEPSS rescore
  43. 2026-08-02 23:06 UTCEG score recompute
  44. 2026-08-02 02:27 UTCEPSS rescore
  45. 2026-08-01 20:53 UTCEG score recompute
  46. 2026-08-01 04:16 UTCEPSS rescore
  47. 2026-07-31 18:23 UTCEG score recompute
  48. 2026-07-30 16:28 UTCEPSS rescore
  49. 2026-07-30 14:50 UTCEG score recompute▼ 1.00
  50. 2026-07-30 14:48 UTCNVD updateCVSS v3 → 5.3
  51. 2026-07-30 01:30 UTCEPSS rescore
  52. 2026-07-28 03:21 UTCEG score recompute
  53. 2026-07-26 22:14 UTCEG score recompute
  54. 2026-07-26 14:54 UTCEPSS rescore
  55. 2026-07-24 14:18 UTCEPSS rescore
  56. 2026-07-23 14:18 UTCEPSS rescore
  57. 2026-07-23 03:17 UTCEG score recompute
  58. 2026-07-22 14:08 UTCEPSS rescore
  59. 2026-07-21 15:24 UTCEPSS rescore
  60. 2026-07-20 17:08 UTCEPSS rescore
  61. 2026-07-19 14:31 UTCEPSS rescore
  62. 2026-07-18 10:04 UTCEPSS rescore
  63. 2026-07-16 17:03 UTCEPSS rescore
  64. 2026-07-15 16:29 UTCEG score recompute▲ 6.30
  65. 2026-07-15 16:29 UTCMITRE cvelistV5CVSS v3 → 6.3 · CVSS v4 → 6.3
  66. 2026-06-14 23:18 UTCEPSS rescore
  67. 2026-06-13 23:00 UTCEPSS rescore
  68. 2026-06-12 23:12 UTCEPSS rescore
  69. 2026-06-04 20:10 UTCEG score recompute

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-47703?
CVE-2026-47703 is a medium vulnerability published on June 4, 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…
When was CVE-2026-47703 disclosed?
CVE-2026-47703 was first published on June 4, 2026, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-47703 actively exploited?
CVE-2026-47703 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (3rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-47703?
CVE-2026-47703 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-47703?
A fix for CVE-2026-47703 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-47703 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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