CVE-2025-27851

CRITICALPre-NVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

Score 9.3 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-13. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
9.3
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

The locally served web site on the Garmin WDU (v1 1.4.6 and v2 5.0) allows a cross-site origin WebSocket hijacking attack. Among other uses, the WDU utilizes WebSockets to control settings, including administrative settings. This allows a network attacker to take full control of a WDU. To initiate an exploit of this vulnerability, the victim must (1) be utilizing a web browser on a multihomed host that has local interfaces on the Garmin Marine Network as well as another network, and (2) access a malicious third party website created by the attacker.

CVSS v3
9.3
EG Score
9.3(medium)
EPSS
4.2%
KEV
Not listed

Published

May 13, 2026

Last Modified

June 2, 2026

Advisory Details (2)

Auto-updated May 14, 2026
No patch confirmed yet.
generic

Garmin: EmpirBus WDUv2 Change History

https://www8.garmin.com/support/ch.jsp?product=010-02642-00
generic

Garmin Official Site

https://garmin.com

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 55× 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.

Showing the most recent 100 of 203 total refreshes for this CVE.

  1. 2026-07-20 17:07 UTCEPSS rescore
  2. 2026-07-19 14:30 UTCEPSS rescore
  3. 2026-07-19 14:30 UTCEPSS rescore
  4. 2026-07-19 02:28 UTCEPSS rescore
  5. 2026-07-19 02:28 UTCEPSS rescore
  6. 2026-07-18 10:04 UTCEPSS rescore
  7. 2026-07-18 10:04 UTCEPSS rescore
  8. 2026-07-16 17:02 UTCEPSS rescore
  9. 2026-07-15 16:57 UTCEPSS rescore
  10. 2026-07-15 16:57 UTCEPSS rescore
  11. 2026-07-15 01:59 UTCEPSS rescore
  12. 2026-07-15 01:59 UTCEPSS rescore
  13. 2026-07-13 22:29 UTCEPSS rescore
  14. 2026-07-13 06:12 UTCEPSS rescore
  15. 2026-07-13 06:12 UTCEPSS rescore
  16. 2026-07-12 05:46 UTCEPSS rescore
  17. 2026-07-12 05:46 UTCEPSS rescore
  18. 2026-07-11 08:27 UTCEPSS rescore
  19. 2026-07-11 08:27 UTCEPSS rescore
  20. 2026-07-09 19:09 UTCEPSS rescore
  21. 2026-07-08 15:14 UTCEPSS rescore
  22. 2026-07-07 13:45 UTCEPSS rescore
  23. 2026-07-06 02:22 UTCEPSS rescore
  24. 2026-07-05 02:30 UTCEPSS rescore
  25. 2026-07-04 06:30 UTCEPSS rescore
Show 75 more
  1. 2026-07-02 17:01 UTCEPSS rescore
  2. 2026-07-01 15:06 UTCEPSS rescore
  3. 2026-06-30 23:22 UTCEPSS rescore
  4. 2026-06-30 23:21 UTCEPSS rescore
  5. 2026-06-29 22:11 UTCGHSA enrichment
  6. 2026-06-29 14:06 UTCEPSS rescore
  7. 2026-06-28 14:07 UTCEPSS rescore
  8. 2026-06-28 14:07 UTCEPSS rescore
  9. 2026-06-28 12:48 UTCGHSA enrichment
  10. 2026-06-28 08:14 UTCGHSA enrichment
  11. 2026-06-28 04:55 UTCEPSS rescore
  12. 2026-06-28 04:55 UTCEPSS rescore
  13. 2026-06-28 03:42 UTCGHSA enrichment
  14. 2026-06-27 23:19 UTCGHSA enrichment
  15. 2026-06-27 13:12 UTCGHSA enrichment
  16. 2026-06-27 08:09 UTCGHSA enrichment
  17. 2026-06-27 03:08 UTCEPSS rescore
  18. 2026-06-26 20:27 UTCGHSA enrichment
  19. 2026-06-26 03:59 UTCGHSA enrichment
  20. 2026-06-25 19:34 UTCGHSA enrichment
  21. 2026-06-25 13:49 UTCEPSS rescore
  22. 2026-06-25 13:49 UTCEPSS rescore
  23. 2026-06-24 14:04 UTCEPSS rescore
  24. 2026-06-24 14:04 UTCEPSS rescore
  25. 2026-06-23 21:32 UTCEPSS rescore
  26. 2026-06-23 21:32 UTCEPSS rescore
  27. 2026-06-22 14:25 UTCEPSS rescore
  28. 2026-06-22 14:25 UTCEPSS rescore
  29. 2026-06-21 14:56 UTCEPSS rescore
  30. 2026-06-21 14:56 UTCEPSS rescore
  31. 2026-06-21 01:59 UTCEPSS rescore
  32. 2026-06-21 01:59 UTCEPSS rescore
  33. 2026-06-19 19:25 UTCEPSS rescore
  34. 2026-06-19 19:25 UTCEPSS rescore
  35. 2026-06-18 17:52 UTCEPSS rescore
  36. 2026-06-18 17:52 UTCEPSS rescore
  37. 2026-06-17 20:41 UTCGHSA enrichment
  38. 2026-06-17 17:52 UTCEPSS rescore
  39. 2026-06-17 14:20 UTCGHSA enrichment
  40. 2026-06-17 03:00 UTCGHSA enrichment
  41. 2026-06-16 22:28 UTCGHSA enrichment
  42. 2026-06-16 17:52 UTCEPSS rescore
  43. 2026-06-16 17:52 UTCEPSS rescore
  44. 2026-06-16 11:24 UTCGHSA enrichment
  45. 2026-06-16 05:16 UTCGHSA enrichment
  46. 2026-06-16 00:34 UTCGHSA enrichment
  47. 2026-06-15 17:48 UTCEPSS rescore
  48. 2026-06-15 07:57 UTCGHSA enrichment
  49. 2026-06-15 03:29 UTCGHSA enrichment
  50. 2026-06-14 23:17 UTCEPSS rescore
  51. 2026-06-14 23:07 UTCGHSA enrichment
  52. 2026-06-14 18:44 UTCGHSA enrichment
  53. 2026-06-14 14:21 UTCGHSA enrichment
  54. 2026-06-14 09:51 UTCGHSA enrichment
  55. 2026-06-14 05:28 UTCGHSA enrichment
  56. 2026-06-13 23:41 UTCGHSA enrichment
  57. 2026-06-13 23:00 UTCEPSS rescore
  58. 2026-06-13 23:00 UTCEPSS rescore
  59. 2026-06-13 10:05 UTCGHSA enrichment
  60. 2026-06-13 05:43 UTCGHSA enrichment
  61. 2026-06-13 01:21 UTCGHSA enrichment
  62. 2026-06-12 23:11 UTCEPSS rescore
  63. 2026-06-12 20:53 UTCGHSA enrichment
  64. 2026-06-12 16:31 UTCGHSA enrichment
  65. 2026-06-12 11:36 UTCGHSA enrichment
  66. 2026-06-12 07:13 UTCGHSA enrichment
  67. 2026-06-12 02:50 UTCGHSA enrichment
  68. 2026-06-11 22:27 UTCGHSA enrichment
  69. 2026-06-11 18:05 UTCGHSA enrichment
  70. 2026-06-11 13:59 UTCEPSS rescore
  71. 2026-06-11 13:41 UTCGHSA enrichment
  72. 2026-06-11 09:17 UTCGHSA enrichment
  73. 2026-06-11 04:55 UTCGHSA enrichment
  74. 2026-06-11 00:33 UTCGHSA enrichment
  75. 2026-06-10 22:18 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-27851?
CVE-2025-27851 is a critical vulnerability published on May 13, 2026. The locally served web site on the Garmin WDU (v1 1.4.6 and v2 5.0) allows a cross-site origin WebSocket hijacking attack. Among other uses, the WDU utilizes WebSockets to control settings, including administrative settings. This allows a network attacker to take full control of a WDU. To initiate…
When was CVE-2025-27851 disclosed?
CVE-2025-27851 was first published in the National Vulnerability Database on May 13, 2026, with the most recent update on June 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-27851 actively exploited?
CVE-2025-27851 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-27851?
CVE-2025-27851 has a CVSS v3.1 base score of 9.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2025-27851?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-27851, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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