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
Trending — 4 sources updated this week
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
24%
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 8× in last 7d / 82× 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 252 total refreshes for this CVE.

  1. 2026-08-25 13:49 UTCEPSS rescore
  2. 2026-08-23 18:13 UTCEG score recompute
  3. 2026-08-23 18:13 UTCVendor advisory
  4. 2026-08-23 18:13 UTCGHSA enrichment
  5. 2026-08-23 00:19 UTCEPSS rescore
  6. 2026-08-21 23:49 UTCEPSS rescore
  7. 2026-08-20 22:55 UTCEPSS rescore
  8. 2026-08-19 17:03 UTCEPSS rescore
  9. 2026-08-18 13:48 UTCEPSS rescore
  10. 2026-08-17 13:47 UTCEPSS rescore
  11. 2026-08-17 10:50 UTCEG score recompute
  12. 2026-08-17 10:50 UTCVendor advisory
  13. 2026-08-17 10:50 UTCGHSA enrichment
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-16 04:13 UTCEG score recompute
  16. 2026-08-16 04:13 UTCVendor advisory
  17. 2026-08-16 04:13 UTCGHSA enrichment
  18. 2026-08-16 02:14 UTCEPSS rescore
  19. 2026-08-15 01:30 UTCEPSS rescore
  20. 2026-08-15 00:24 UTCVendor advisory
  21. 2026-08-15 00:24 UTCGHSA enrichment
  22. 2026-08-14 13:33 UTCVendor advisory
  23. 2026-08-14 13:33 UTCGHSA enrichment
  24. 2026-08-14 02:42 UTCEG score recompute
  25. 2026-08-14 02:42 UTCVendor advisory
Show 75 more
  1. 2026-08-14 02:42 UTCGHSA enrichment
  2. 2026-08-13 22:00 UTCEPSS rescore
  3. 2026-08-13 02:51 UTCGHSA enrichment
  4. 2026-08-12 16:00 UTCEG score recompute
  5. 2026-08-12 16:00 UTCVendor advisory
  6. 2026-08-12 16:00 UTCGHSA enrichment
  7. 2026-08-12 13:51 UTCEPSS rescore
  8. 2026-08-11 15:40 UTCEG score recompute
  9. 2026-08-11 15:40 UTCVendor advisory
  10. 2026-08-11 15:40 UTCGHSA enrichment
  11. 2026-08-11 13:43 UTCEPSS rescore
  12. 2026-08-11 02:18 UTCEG score recompute
  13. 2026-08-11 02:18 UTCVendor advisory
  14. 2026-08-11 02:18 UTCGHSA enrichment
  15. 2026-08-11 00:00 UTCEPSS rescore
  16. 2026-08-10 15:27 UTCGHSA enrichment
  17. 2026-08-10 11:32 UTCVendor advisory
  18. 2026-08-10 11:32 UTCGHSA enrichment
  19. 2026-08-09 23:46 UTCEG score recompute
  20. 2026-08-09 23:46 UTCVendor advisory
  21. 2026-08-09 23:46 UTCGHSA enrichment
  22. 2026-08-09 13:46 UTCEPSS rescore
  23. 2026-08-09 12:55 UTCVendor advisory
  24. 2026-08-09 12:55 UTCGHSA enrichment
  25. 2026-08-09 02:04 UTCVendor advisory
  26. 2026-08-09 02:04 UTCGHSA enrichment
  27. 2026-08-08 04:55 UTCGHSA enrichment
  28. 2026-08-07 18:04 UTCEG score recompute
  29. 2026-08-07 18:04 UTCGHSA enrichment
  30. 2026-08-07 07:13 UTCVendor advisory
  31. 2026-08-07 07:13 UTCGHSA enrichment
  32. 2026-08-06 19:30 UTCEG score recompute
  33. 2026-08-06 19:30 UTCVendor advisory
  34. 2026-08-06 19:30 UTCGHSA enrichment
  35. 2026-08-06 13:46 UTCEPSS rescore
  36. 2026-08-06 08:39 UTCVendor advisory
  37. 2026-08-06 08:39 UTCGHSA enrichment
  38. 2026-08-05 21:48 UTCEG score recompute
  39. 2026-08-05 21:48 UTCVendor advisory
  40. 2026-08-05 21:48 UTCGHSA enrichment
  41. 2026-08-05 19:17 UTCEPSS rescore
  42. 2026-08-04 15:10 UTCEPSS rescore
  43. 2026-08-04 10:38 UTCEPSS rescore
  44. 2026-08-04 06:06 UTCGHSA enrichment
  45. 2026-08-03 19:15 UTCGHSA enrichment
  46. 2026-08-02 20:46 UTCVendor advisory
  47. 2026-08-02 20:46 UTCGHSA enrichment
  48. 2026-08-02 09:55 UTCVendor advisory
  49. 2026-08-02 09:55 UTCGHSA enrichment
  50. 2026-08-01 23:04 UTCEG score recompute
  51. 2026-08-01 23:04 UTCVendor advisory
  52. 2026-08-01 23:04 UTCGHSA enrichment
  53. 2026-08-01 04:16 UTCEPSS rescore
  54. 2026-07-30 16:28 UTCEPSS rescore
  55. 2026-07-30 01:30 UTCEPSS rescore
  56. 2026-07-28 15:36 UTCEPSS rescore
  57. 2026-07-27 14:13 UTCEPSS rescore
  58. 2026-07-26 14:54 UTCEPSS rescore
  59. 2026-07-26 14:54 UTCEPSS rescore
  60. 2026-07-25 14:18 UTCEPSS rescore
  61. 2026-07-24 14:17 UTCEPSS rescore
  62. 2026-07-23 14:18 UTCEPSS rescore
  63. 2026-07-23 03:11 UTCEG score recompute
  64. 2026-07-22 14:08 UTCEPSS rescore
  65. 2026-07-21 15:24 UTCEPSS rescore
  66. 2026-07-20 17:08 UTCEPSS rescore
  67. 2026-07-19 02:29 UTCEPSS rescore
  68. 2026-07-18 10:04 UTCEPSS rescore
  69. 2026-07-16 17:03 UTCEPSS rescore
  70. 2026-07-15 16:57 UTCEPSS rescore
  71. 2026-07-15 16:57 UTCEPSS rescore
  72. 2026-07-15 02:00 UTCEPSS rescore
  73. 2026-07-13 22:30 UTCEPSS rescore
  74. 2026-07-13 06:13 UTCEPSS rescore
  75. 2026-07-13 06:13 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 75.9% 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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