CVE-2026-66050

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-27. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: Elevated riskExposed: 0

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

NitroShare Desktop through 0.3.4 contains a path traversal vulnerability in its LAN file transfer server that allows unauthenticated attackers on the same network to write arbitrary files by sending a crafted filename containing directory traversal sequences in the JSON item header name field. Attackers can exploit the lack of path validation to write files outside the transfer root directory to arbitrary locations the current user has write access, including the Windows Startup folder, enabling persistent code execution on the next user login.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
65(Attend)
EG Risk 65/100SSVC: Attend

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
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
52%
KEV
Not listed

Published

July 27, 2026

Last Modified

July 28, 2026

Advisory Details (2)

Auto-updated Jul 27, 2026
No patch confirmed yet.
generic

NitroShare Desktop 0.3.4 Path Traversal via LAN File Transfer Server | Advisories | VulnCheck

https://www.vulncheck.com/advisories/nitroshare-desktop-path-traversal-via-lan-file-transfer-server
generic

GitHub - cduram/NotCVE-2026-0009: Vulnerability in NitroShare Desktop v0.3.4 · GitHub

https://github.com/cduram/NotCVE-2026-0009

Vendor Advisories for CVE-2026-66050(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 21× in last 7d / 113× 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 134 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-66050?
CVE-2026-66050 is a high vulnerability published on July 27, 2026. NitroShare Desktop through 0.3.4 contains a path traversal vulnerability in its LAN file transfer server that allows unauthenticated attackers on the same network to write arbitrary files by sending a crafted filename containing directory traversal sequences in the JSON item header name field.…
When was CVE-2026-66050 disclosed?
CVE-2026-66050 was first published in the National Vulnerability Database on July 27, 2026, with the most recent update on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-66050 actively exploited?
CVE-2026-66050 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 48.5% of all scored CVEs.
What is the CVSS score of CVE-2026-66050?
CVE-2026-66050 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-66050?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-66050, 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-2026-66050

Explore →

Is Your Infrastructure Affected by CVE-2026-66050?

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

Start Free Scan →Browse All CVEs