CVE-2026-41088

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-12. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

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

Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
23.9%
KEV
Not listed

Published

May 12, 2026

Last Modified

June 19, 2026

Advisory Details (1)

Auto-updated May 15, 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-2026-41088

Vendor Advisories for CVE-2026-41088(1)

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 9× in last 7d / 73× 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 190 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-41088?
CVE-2026-41088 is a high vulnerability published on May 12, 2026. Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
When was CVE-2026-41088 disclosed?
CVE-2026-41088 was first published in the National Vulnerability Database on May 12, 2026, with the most recent update on June 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-41088 actively exploited?
CVE-2026-41088 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 23.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-41088?
CVE-2026-41088 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-41088?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-41088, 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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