CVE-2026-8363

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-27. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this weekElevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: Elevated riskExposed: 0

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

A stack-based buffer overflow condition exists in WOSDeviceDropFolder.dll when processing a long URL path starting with /resources:

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Attend)
EG Risk 75/100SSVC: 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
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
27%
KEV
Not listed

Published

May 27, 2026

Last Modified

May 29, 2026

Advisory Details (1)

Auto-updated Sep 9, 2026
No patch confirmed yet.
generic

Gladinet Triofox Server Agent Multiple Vulnerabilities - Research Advisory | Tenable®

https://www.tenable.com/security/research/TRA-2026-45

Vendor Advisories for CVE-2026-8363(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 / 42× 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 349 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-8363?
CVE-2026-8363 is a critical vulnerability published on May 27, 2026. A stack-based buffer overflow condition exists in WOSDeviceDropFolder.dll when processing a long URL path starting with /resources:
When was CVE-2026-8363 disclosed?
CVE-2026-8363 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on May 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8363 actively exploited?
CVE-2026-8363 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 73.4% of all scored CVEs.
What is the CVSS score of CVE-2026-8363?
CVE-2026-8363 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-8363?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8363, 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.

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