CVE-2026-1933

MEDIUMNVD 6.57.1▲
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-05-27. NVD baseline CVSS 6.5; sources differ by 0.6.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 6 sources updated this week
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 6.5Exploit: NoneExposed: 0

A fix is available — apply it.

A flaw was found in Samba’s handling of NTFS-style reparse points on shares configured with read only = yes. Due to missing SMB-layer access checks, authenticated users with underlying filesystem write permissions may create or delete reparse point metadata through SMB operations even on read-only exports. This could allow modification of SMB-visible file behavior, including converting files into symbolic links or other reparse point types.

CVSS v3
6.5
EG Score
7.1(medium)
EPSS
54.4%
KEV
Not listed

Published

May 27, 2026

Last Modified

July 15, 2026

Advisory Details (5)

Auto-updated Jun 13, 2026
Patch available. Sources: redhat.
generic

15992 – (CVE-2026-1933) CVE-2026-1933 [SECURITY] Missing access check on reparse point operations

https://bugzilla.samba.org/show_bug.cgi?id=15992
redhat Patch Available

2447317 – (CVE-2026-1933) CVE-2026-1933 samba: Missing access check on reparse point operations

Affected: Red Hat Enterprise Linux 10

https://bugzilla.redhat.com/show_bug.cgi?id=2447317
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-1933
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2026:25049
redhat Patch Available

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2026:22963

Vendor Advisories for CVE-2026-1933(11)

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

Patch Availability(11)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuwinbind (2:4.15.13+dfsg-0ubuntu1.12) @ jammy2026-07-12ubuntu
redhatrhcos-4.19.9.6.202606241344-02026-07-02redhat
redhatsamba-0:4.19.4-105.el9_4.42026-06-23redhat
redhatsamba-0:4.21.3-114.el10_0.12026-06-23redhat
redhatsamba-0:4.15.5-16.el8_6.12026-06-23redhat
redhatsamba-0:4.17.5-7.el8_8.12026-06-23redhat
redhatsamba-0:4.17.5-105.el9_2.52026-06-23redhat
redhatsamba-0:4.21.3-14.el9_6.12026-06-15redhat
redhatsamba-0:4.23.5-10.el9_82026-06-10redhat
redhatsamba-0:4.23.5-109.el10_22026-06-03redhat
redhatsamba-0:4.19.4-16.el8_102026-06-03redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 16× in last 7d / 98× 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 233 total refreshes for this CVE.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 02:25 UTCNVD updateCVSS v3 → 6.5 · severity → MEDIUM
  4. 2026-07-15 02:06 UTCMITRE cvelistV5CVSS v3 → 7.1 · severity → HIGH
  5. 2026-07-15 02:00 UTCEPSS rescore
  6. 2026-07-15 02:00 UTCEPSS rescore
  7. 2026-07-13 22:30 UTCEPSS rescore
  8. 2026-07-13 06:13 UTCEPSS rescore
  9. 2026-07-13 06:13 UTCEPSS rescore
  10. 2026-07-12 05:46 UTCEPSS rescore
  11. 2026-07-12 05:46 UTCEPSS rescore
  12. 2026-07-12 01:11 UTCEG score recompute
  13. 2026-07-12 01:11 UTCVendor advisory
  14. 2026-07-12 01:11 UTCGHSA enrichment
  15. 2026-07-11 08:27 UTCEPSS rescore
  16. 2026-07-09 19:10 UTCEPSS rescore
  17. 2026-07-09 00:16 UTCEG score recompute
  18. 2026-07-09 00:16 UTCVendor advisory
  19. 2026-07-09 00:16 UTCGHSA enrichment
  20. 2026-07-08 15:15 UTCEPSS rescore
  21. 2026-07-08 15:15 UTCEPSS rescore
  22. 2026-07-07 13:46 UTCEPSS rescore
  23. 2026-07-06 16:27 UTCEPSS rescore
  24. 2026-07-06 02:23 UTCEPSS rescore
  25. 2026-07-05 02:30 UTCEPSS rescore
Show 75 more
  1. 2026-07-05 02:30 UTCEPSS rescore
  2. 2026-07-04 06:31 UTCEPSS rescore
  3. 2026-07-01 15:06 UTCEPSS rescore
  4. 2026-07-01 15:06 UTCEPSS rescore
  5. 2026-07-01 11:12 UTCEG score recompute
  6. 2026-07-01 11:12 UTCVendor advisory
  7. 2026-07-01 11:12 UTCGHSA enrichment
  8. 2026-06-30 23:22 UTCEPSS rescore
  9. 2026-06-30 03:56 UTCEG score recompute
  10. 2026-06-30 03:56 UTCVendor advisory
  11. 2026-06-30 03:56 UTCGHSA enrichment
  12. 2026-06-29 14:27 UTCEG score recompute
  13. 2026-06-29 14:27 UTCVendor advisory
  14. 2026-06-29 14:27 UTCGHSA enrichment
  15. 2026-06-28 21:03 UTCEG score recompute
  16. 2026-06-28 21:03 UTCVendor advisory
  17. 2026-06-28 21:03 UTCGHSA enrichment
  18. 2026-06-28 14:07 UTCEPSS rescore
  19. 2026-06-28 06:49 UTCEG score recompute
  20. 2026-06-28 06:49 UTCVendor advisory
  21. 2026-06-28 06:48 UTCGHSA enrichment
  22. 2026-06-28 04:56 UTCEPSS rescore
  23. 2026-06-28 04:56 UTCEPSS rescore
  24. 2026-06-27 18:32 UTCEG score recompute
  25. 2026-06-27 18:32 UTCVendor advisory
  26. 2026-06-27 18:32 UTCGHSA enrichment
  27. 2026-06-27 06:07 UTCEG score recompute
  28. 2026-06-27 06:07 UTCVendor advisory
  29. 2026-06-27 06:07 UTCGHSA enrichment
  30. 2026-06-27 03:08 UTCEPSS rescore
  31. 2026-06-26 17:11 UTCEG score recompute
  32. 2026-06-26 17:11 UTCVendor advisory
  33. 2026-06-26 17:11 UTCGHSA enrichment
  34. 2026-06-26 02:40 UTCEG score recompute
  35. 2026-06-26 02:40 UTCVendor advisory
  36. 2026-06-26 02:40 UTCGHSA enrichment
  37. 2026-06-25 13:49 UTCEPSS rescore
  38. 2026-06-25 12:55 UTCEG score recompute
  39. 2026-06-25 12:55 UTCVendor advisory
  40. 2026-06-25 12:55 UTCGHSA enrichment
  41. 2026-06-25 01:32 UTCEG score recompute
  42. 2026-06-25 01:32 UTCVendor advisory
  43. 2026-06-25 01:32 UTCGHSA enrichment
  44. 2026-06-24 14:05 UTCEPSS rescore
  45. 2026-06-23 21:32 UTCEPSS rescore
  46. 2026-06-23 09:33 UTCNVD updateCVSS v3 → 6.5 · severity → MEDIUM
  47. 2026-06-23 08:05 UTCMITRE cvelistV5CVSS v3 → 7.1 · severity → HIGH
  48. 2026-06-23 05:34 UTCNVD updateCVSS v3 → 6.5 · severity → MEDIUM
  49. 2026-06-23 03:50 UTCMITRE cvelistV5CVSS v3 → 7.1 · severity → HIGH
  50. 2026-06-23 03:31 UTCNVD updateCVSS v3 → 6.5 · severity → MEDIUM
  51. 2026-06-22 14:25 UTCEPSS rescore
  52. 2026-06-22 14:25 UTCEPSS rescore
  53. 2026-06-21 14:56 UTCEPSS rescore
  54. 2026-06-21 14:56 UTCEPSS rescore
  55. 2026-06-21 02:31 UTCMITRE cvelistV5CVSS v3 → 7.1 · severity → HIGH
  56. 2026-06-21 01:59 UTCEPSS rescore
  57. 2026-06-21 01:59 UTCEPSS rescore
  58. 2026-06-19 19:25 UTCEPSS rescore
  59. 2026-06-18 17:52 UTCEPSS rescore
  60. 2026-06-18 02:19 UTCEG score recompute
  61. 2026-06-18 02:19 UTCVendor advisory
  62. 2026-06-18 02:18 UTCGHSA enrichment
  63. 2026-06-17 17:53 UTCEPSS rescore
  64. 2026-06-17 14:55 UTCEG score recompute
  65. 2026-06-17 14:55 UTCVendor advisory
  66. 2026-06-17 14:55 UTCGHSA enrichment
  67. 2026-06-17 03:33 UTCEG score recompute
  68. 2026-06-17 03:33 UTCVendor advisory
  69. 2026-06-17 03:32 UTCGHSA enrichment
  70. 2026-06-16 17:52 UTCEPSS rescore
  71. 2026-06-16 16:09 UTCEG score recompute
  72. 2026-06-16 16:09 UTCVendor advisory
  73. 2026-06-16 16:09 UTCGHSA enrichment
  74. 2026-06-16 00:56 UTCEG score recompute
  75. 2026-06-16 00:56 UTCVendor advisory

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-1933?
CVE-2026-1933 is a medium vulnerability published on May 27, 2026. A flaw was found in Samba’s handling of NTFS-style reparse points on shares configured with read only = yes. Due to missing SMB-layer access checks, authenticated users with underlying filesystem write permissions may create or delete reparse point metadata through SMB operations even on read-only…
When was CVE-2026-1933 disclosed?
CVE-2026-1933 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-1933 actively exploited?
CVE-2026-1933 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 54.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-1933?
CVE-2026-1933 has a CVSS v3 base score of 6.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.1.
How do I remediate CVE-2026-1933?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-1933, 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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