CVE-2026-63089

CRITICALPre-NVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

Score 9.3 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-16. a secondary CVSS source baseline 9.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.3Exploit: None knownExposed: 0

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

WireGuard Easy through 15.3.0, fixed in commit 66b292b, contains a cryptographically weak one-time link token generation vulnerability that allows unauthenticated network attackers to recover WireGuard peer credentials by brute-forcing a keyspace of at most 1000 candidate tokens per client ID, as the token is computed using CRC32 over a random value constrained to 0-999. Attackers can enumerate candidate tokens against the unauthenticated /cnf/:oneTimeLink route, which lacks rate limiting and does not validate token expiration, to obtain a peer's PrivateKey and PresharedKey and impersonate that peer on the VPN network.

CVSS v3
9.3
EG Score
9.3(medium)
EG Risk
57(Track)
EG Risk 57/100SSVC: Track

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
Severity93% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

July 16, 2026

Last Modified

July 18, 2026

Advisory Details (3)

Auto-updated Sep 3, 2026
Patch available. Sources: github_commit, github_pr.
generic

WireGuard Easy Weak Token Generation Information Disclosure via OTL Route | Advisories | VulnCheck

https://www.vulncheck.com/advisories/wireguard-easy-weak-token-generation-information-disclosure-via-otl-route
github_pr Patch Available

improve security

Patch available: wg-easy/wg-easy v15.4.0-beta.1 (PR #2661 merged 2026-06-12)

https://github.com/wg-easy/wg-easy/pull/2661
github_commit Patch Available

commit 66b292b11bde (wg-easy/wg-easy)

Patch available: wg-easy/wg-easy v15.4.0-beta.1 (contains commit 66b292b11bde)

https://github.com/wg-easy/wg-easy/commit/66b292b11bde3664f05ffb016c8082665d261ded

Vendor Advisories for CVE-2026-63089(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 139× 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 300 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-63089?
CVE-2026-63089 is a critical vulnerability published on July 16, 2026. WireGuard Easy through 15.3.0, fixed in commit 66b292b, contains a cryptographically weak one-time link token generation vulnerability that allows unauthenticated network attackers to recover WireGuard peer credentials by brute-forcing a keyspace of at most 1000 candidate tokens per client ID, as…
When was CVE-2026-63089 disclosed?
CVE-2026-63089 was first published in the National Vulnerability Database on July 16, 2026, with the most recent update on July 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63089 actively exploited?
CVE-2026-63089 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 65.1% of all scored CVEs.
What is the CVSS score of CVE-2026-63089?
CVE-2026-63089 has a CVSS v3 base score of 9.3 (NVD).
How do I remediate CVE-2026-63089?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63089, 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.

Dependency Blast Radius

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