CVE-2026-50428

HIGHNVD 5.57.1▲
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-07-14. NVD baseline CVSS 5.5; sources differ by 1.6.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
7.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

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

Out-of-bounds read in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to disclose information locally.

CVSS v3
5.5
EG Score
7.1(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
34%
KEV
Not listed

Published

July 14, 2026

Last Modified

August 28, 2026

Advisory Details (1)

Auto-updated Jul 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-2026-50428

Vendor Advisories for CVE-2026-50428(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 31× in last 7d / 164× 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 234 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-50428?
CVE-2026-50428 is a high vulnerability published on July 14, 2026. Out-of-bounds read in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to disclose information locally.
When was CVE-2026-50428 disclosed?
CVE-2026-50428 was first published in the National Vulnerability Database on July 14, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-50428 actively exploited?
CVE-2026-50428 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 65.9% of all scored CVEs.
What is the CVSS score of CVE-2026-50428?
CVE-2026-50428 has a CVSS v3 base score of 5.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.1.
How do I remediate CVE-2026-50428?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-50428, 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-2026-50428

Explore →

Is Your Infrastructure Affected by CVE-2026-50428?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs