Description
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().
Published: 2026-05-12
Score: 8.6 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Thu, 14 May 2026 15:00:00 +0000

Type Values Removed Values Added
First Time appeared Wftpserver
Wftpserver wing Ftp Server
CPEs cpe:2.3:a:wftpserver:wing_ftp_server:*:*:*:*:*:*:*:*
Vendors & Products Wftpserver
Wftpserver wing Ftp Server

Wed, 13 May 2026 13:15:00 +0000

Type Values Removed Values Added
Description Wing FTP Server 8.1.2 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(). 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().
Title Wing FTP Server 8.1.2 Authenticated Remote Code Execution via Session Serialization Wing FTP Server < 8.1.3 Authenticated Remote Code Execution via Session Serialization
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 13 May 2026 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Wing Ftp Server
Wing Ftp Server wing Ftp Server
Vendors & Products Wing Ftp Server
Wing Ftp Server wing Ftp Server

Tue, 12 May 2026 21:30:00 +0000

Type Values Removed Values Added
References

Tue, 12 May 2026 21:00:00 +0000

Type Values Removed Values Added
Description Wing FTP Server 8.1.2 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().
Title Wing FTP Server 8.1.2 Authenticated Remote Code Execution via Session Serialization
Weaknesses CWE-94
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


Subscriptions

Wftpserver Wing Ftp Server
Wing Ftp Server Wing Ftp Server
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-05-13T13:20:40.343Z

Reserved: 2026-05-05T21:38:43.137Z

Link: CVE-2026-44403

cve-icon Vulnrichment

Updated: 2026-05-13T12:22:13.338Z

cve-icon NVD

Status : Analyzed

Published: 2026-05-12T21:16:16.667

Modified: 2026-05-14T14:50:51.863

Link: CVE-2026-44403

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-13T16:30:36Z

Weaknesses