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Security Digest · Vulnerability record · Known exploited

CVE-2025-47813: Wing FTP Server Information Disclosure Vulnerability

Exploited in the wild (CISA KEV). loginok.html in Wing FTP Server before 7.4.4 discloses the full local installation path of the application when using a long value in the UID cookie.

CISA KEV · added 2026-03-16 CVSS 4.3 Medium EPSS 62.5% · p99

Updated By erroneo.us Security Desk7 references Seen in the digest for Mar 16, 2026

Should you act?

Exploited: patch now if you run it

CISA has confirmed exploitation in the wild. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.

  • Yes, if you run Wing FTP Server Wing FTP Server. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2026-03-16, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2026-03-30; treat that as the outer limit, not the target.
  • EPSS 62.5%, percentile 99: FIRST’s model estimates a 62.5% chance of exploitation activity in the next 30 days, higher than 99% of all scored CVEs (very high). EPSS is a probability, not a verdict.
  • Needs an account (low (any account)). Exposure depends on who can log in.

What it is

loginok.html in Wing FTP Server before 7.4.4 discloses the full local installation path of the application when using a long value in the UID cookie.

CISA’s summary

Wing FTP Server contains a generation of error message containing sensitive information vulnerability when using a long value in the UID cookie.

Weakness type: CWE-209.

Product: Wing FTP Server Wing FTP Server · Assigned by: mitre · Published: 2025-07-10

Affected and fixed versions

VendorProductAffected versions (per CVE record)
wftpserverWing FTP Server< 7.4.4

Severity scores

Scored byCVSSScoreVector
mitre3.14.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
  • Attack vector: network (remotely reachable)
  • Attack complexity: low
  • Privileges required: low (any account)
  • User interaction: none
  • Scope: unchanged

CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.

Exploitation and urgency

  • CISA KEV: added 2026-03-16; federal due date 2026-03-30. Known ransomware use: Unknown.
  • CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
  • CISA SSVC assessment: exploitation active, automatable no, technical impact total.
  • FIRST EPSS (model of 2026-10-21): 62.51% probability of exploitation activity in the next 30 days; percentile 99.

Timeline

  • — CVE record published by mitre
  • — Added to CISA’s Known Exploited Vulnerabilities catalog
  • — CVE record last updated
  • — CISA remediation deadline for US federal agencies

Sources and references

Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.

Vendor and project advisories, patches

  1. Listed in CISA KEV notes (wftpserver.com) wftpserver.com

Vulnerability records

  1. CVE.org record CVE-2025-47813 cve.org
  2. NVD entry CVE-2025-47813 nvd.nist.gov

Government

  1. CISA Known Exploited Vulnerabilities catalog entry cisa.gov

Other references from the CVE record and advisory

  1. wftpserver.com wftpserver.com
  2. rcesecurity.com rcesecurity.com
  3. github.com github.com

All exploited Wing FTP Server vulnerabilities · Today’s Security Digest