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Vulnerabilities

Vulnerability · CVE-2026-105420

Wing FTP Server does not verify user's base folder.

Published Oct 28, 2026 · catalog updated Nov 5, 2026 · Wing Soft Technology Wing FTP Server

Last checked Nov 5, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-105420. EPSS is 0.52%. Act only if a listed version of Wing Soft Technology Wing FTP Server is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Critical9.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.52%
Remediation
Vendor / distro source
Affected products
vendor Wing Soft Technology · vendor Wing Soft Technology Wing FTP Server

Wing FTP Server does not verify user's base folder. An attacker with admin privileges can add user directories via scripts, allowing the added directories to escape the base folder. This allows the attacker to write files on the system and can lead to remote code execution with process owner privileges.Critically, since the installation guide mentions running the command with , the files are created as “root.” This issue was fixed in version 8.2.6.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Wing Soft Technologyversion unspecified
  • vendor Wing Soft Technology Wing FTP Serverversion unspecified

How to fix CVE-2026-105420

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-105420. EPSS is 0.52%. Act only if a listed version of Wing Soft Technology Wing FTP Server is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-22: Path Traversal. EPSS 0.52%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 28, 2026 · EUVD

    Detected

    Wing FTP Server does not verify user's base folder. An attacker with admin privileges can add user directories via scripts, allowing the added directories to escape the base folder. This allows the attacker to write files on the system and can lead to remote code execution with process owner privileges.Critically, since the installation guide mentions running the command with , the files are creat

  2. Nov 5, 2026 · EUVD

    Updated

    Wing FTP Server does not verify user's base folder. An attacker with admin privileges can add user directories via scripts, allowing the added directories to escape the base folder. This allows the attacker to write files on the system and can lead to remote code execution with process owner privileges.Critically, since the installation guide mentions running the command with , the files are creat

Sources

  • CVE.orgVulnerability recordCVE-2026-105420

    Wing FTP Server does not verify user's base folder. An attacker with admin privileges can add user directories via scripts, allowing the added directories to escape the base folder. This allows the attacker to write files on the system and can lead to remote code execution with p

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-105420

    30-day exploitation probability 0.52%

    first.org
  • EUVDVulnerability recordEUVD-2026-112084

    Wing FTP Server does not verify user's base folder. An attacker with admin privileges can add user directories via scripts, allowing the added directories to escape the base folder. This allows the attacker to write files on the system and can lead to remote code execution with p

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 4, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • EUVDNov 5, 2026
  • FIRST EPSSNov 4, 2026
  • CVE.orgOct 28, 2026