CVE-2026-45602

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreHIGH confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-09. the CNA's CVSS baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
Trending — 4 sources updated this week
9.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.1Exploit: NoneExposed: 0

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

No cwe for this issue in Windows DHCP Server allows an unauthorized attacker to perform tampering over a network.

CVSS v3
9.1
EG Score
9.1(high)
EPSS
28.6%
KEV
Not listed

Published

June 9, 2026

Last Modified

July 1, 2026

Advisory Details (1)

Auto-updated Jun 9, 2026
Patch available. Sources: microsoft.
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45602

Vendor Advisories for CVE-2026-45602(2)

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 84× in last 7d / 412× 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 412 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-45602?
CVE-2026-45602 is a critical vulnerability published on June 9, 2026. No cwe for this issue in Windows DHCP Server allows an unauthorized attacker to perform tampering over a network.
When was CVE-2026-45602 disclosed?
CVE-2026-45602 was first published in the National Vulnerability Database on June 9, 2026, with the most recent update on July 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45602 actively exploited?
CVE-2026-45602 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 28.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-45602?
CVE-2026-45602 has a CVSS v4.0 base score of 9.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-45602?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45602, 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

Explore the affected products and dependency analysis for CVE-2026-45602

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