CVE-2026-44403

HIGHPre-NVD 7.27.2—
EchelonGraph scoreMEDIUM confidence

Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-05-12. NVD baseline CVSS 7.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
7.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 3%CVSS: 7.2Exploit: NoneExposed: 0

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

Wing FTP Server before 8.1.3 contains an authenticated remote code execution vulnerability in the session serialization mechanism that allows authenticated administrators to inject arbitrary Lua code through the domain admin mydirectory field. Attackers can exploit unsafe serialization of session values into Lua source code without proper escaping of closing delimiters, causing the injected code to be executed when the poisoned session is loaded via loadfile().

CVSS v3
7.2
EG Score
7.2(medium)
EPSS
83.9%
KEV
Not listed

Published

May 12, 2026

Last Modified

July 14, 2026

Advisory Details (2)

Auto-updated Jun 11, 2026
No patch confirmed yet.
generic

Wing FTP Server History

https://www.wftpserver.com/serverhistory.htm
generic

Wing FTP Server < 8.1.3 Authenticated Remote Code Execution via Session Serialization | Advisories | VulnCheck

https://www.vulncheck.com/advisories/wing-ftp-server-authenticated-remote-code-execution-via-session-serialization

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 48× 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 141 total refreshes for this CVE.

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

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-52589
    First seen May 29, 2026

    Wing FTP Server 8.1.3 - Authenticated Remote Code Execution

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-44403?
CVE-2026-44403 is a high vulnerability published on May 12, 2026. Wing FTP Server before 8.1.3 contains an authenticated remote code execution vulnerability in the session serialization mechanism that allows authenticated administrators to inject arbitrary Lua code through the domain admin mydirectory field. Attackers can exploit unsafe serialization of session…
When was CVE-2026-44403 disclosed?
CVE-2026-44403 was first published in the National Vulnerability Database on May 12, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44403 actively exploited?
CVE-2026-44403 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 83.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-44403?
CVE-2026-44403 has a CVSS v4.0 base score of 7.2 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-44403?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44403, 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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