CVE-2026-44403: high-severity vulnerability in Wing FTP Server
Wing FTP Server < 8.1.3 Authenticated Remote Code Execution via Session Serialization
Published · Updated
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 8.6epss 2.3%
from disclosure to weapon2 days
Published on NVDMay 12
1st PoC+2d
exploitation probability
2.3%top 17% of all CVEs
observed exploitation
nono source reports it
2 public exploit(s)
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:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
Wing FTP Server · Wing FTP Serverpublic PoCs found — 2
exploitdbwww.exploit-db.com/exploits/52589unverifiedgithubgithub.com/ZemarKhos/CVE-2026-44403-WingFTP-v8.1.2-POC-Exploit★ 1⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — Wing FTP Server
In the same product, most dangerous first.
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