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
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 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)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
25%
KEV
Not listed

Published

May 12, 2026

Last Modified

August 10, 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 6× in last 7d / 29× 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 274 total refreshes for this CVE.

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

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 August 10, 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 0% probability of exploitation in the next 30 days, which ranks it in the top 74.9% of all scored CVEs.
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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