Security readout for executives and security teams
Plain-English summary
Wing FTP Server before 7.4.4 can reveal its full installation path when a long UID cookie is processed. By itself, this is an information leak, not a takeover. Business urgency is higher because CISA lists this CVE in KEV, indicating known exploitation activity.
Executive priority
Prioritize remediation despite the medium CVSS score. The direct impact is limited information disclosure, but KEV status means real-world attackers are using it. Treat internet-facing Wing FTP deployments as the first remediation group.
Technical view
CVE-2025-47813 is a CWE-209 information exposure issue in loginok.html. A long UID cookie can cause disclosure of the application’s local install path. The CVSS 3.1 score is 4.3, with network access, low complexity, low privileges, no user interaction, and confidentiality-only impact.
Likely exposure
Exposure is most likely where Wing FTP Server web functionality is reachable and running a version before 7.4.4. The source bundle does not identify specific operating systems, configurations, or deployment modes beyond Wing FTP Server before 7.4.4.
Exploitation context
CISA KEV inclusion supports treating this as actively exploited. The public sources connect it to Wing FTP Server research, but the bundle only supports path disclosure for this CVE. Do not assume remote code execution from CVE-2025-47813 alone.
Researcher notes
Evidence supports a path disclosure flaw in loginok.html via long UID cookie handling. Sources do not provide complete environmental prerequisites, compensating controls, or vendor advisory details in the supplied bundle. Avoid conflating this CVE with adjacent Wing FTP RCE research unless independently verified.
Mitigation direction
- Upgrade Wing FTP Server to 7.4.4 or later where applicable.
- Check Wing FTP Server vendor guidance for confirmed remediation details.
- Restrict external access to the Wing FTP web interface where business allows.
- Review internet-facing instances first because KEV indicates known exploitation.
Validation and detection
- Inventory Wing FTP Server versions and flag anything before 7.4.4.
- Confirm whether any exposed Wing FTP web interfaces are publicly reachable.
- Review logs for unusual requests involving oversized UID cookie values.
- Check historical error responses for leaked local installation paths.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-209: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2025-47813 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.3 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N2.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wftpserver.com/CVE reference
- https://www.rcesecurity.com/2025/06/what-the-null-wing-ftp-server-rce-cve-2025-47812/CVE reference
- https://github.com/MrTuxracer/advisories/blob/master/CVEs/CVE-2025-47813.txtCVE reference
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-47813CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Generation of Error Message Containing Sensitive Information
Generation of Error Message Containing Sensitive Information represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.