CVE-2026-44815

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-09. the CNA's CVSS baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
Trending — 4 sources updated this week
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

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

Stack-based buffer overflow in Windows DHCP Client allows an unauthorized attacker to execute code over a network.

CVSS v3
9.8
EG Score
9.8(high)
EPSS
61.7%
KEV
Not listed

Published

June 9, 2026

Last Modified

July 1, 2026

Advisory Details (1)

Auto-updated Jul 4, 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-2026-44815

Vendor Advisories for CVE-2026-44815(2)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 90× in last 7d / 447× 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 447 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-44815?
CVE-2026-44815 is a critical vulnerability published on June 9, 2026. Stack-based buffer overflow in Windows DHCP Client allows an unauthorized attacker to execute code over a network.
When was CVE-2026-44815 disclosed?
CVE-2026-44815 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-2026-44815 actively exploited?
CVE-2026-44815 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 61.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-44815?
CVE-2026-44815 has a CVSS v4.0 base score of 9.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-44815?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44815, 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-2026-44815

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