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CVE-2025-47812

10, critical Known exploited

Wing FTP Server Improper Neutralization of Null Byte or NUL Character Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab) CISA KEV catalogue (opens in a new tab)
CVSS
10, critical critical CVSS v3.1
EPSS, next 30 days
94% higher than 99.8% of scored CVEs
Exploitation
Confirmed in the wild
Published
10 Jul 2025a year ago

Known exploited

CISA added this to the Known Exploited Vulnerabilities Catalog on 14 Jul 2025. US federal agencies had to remediate by 4 Aug 2025, a deadline that has passed.

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.

Description

In Wing FTP Server before 7.4.4. the user and admin web interfaces mishandle '\0' bytes, ultimately allowing injection of arbitrary Lua code into user session files. This can be used to execute arbitrary system commands with the privileges of the FTP service (root or SYSTEM by default). This is thus a remote code execution vulnerability that guarantees a total server compromise. This is also exploitable via anonymous FTP accounts.

Details

Vendor
Wing FTP Server
Product
Wing FTP Server
Weakness
CWE-158 (opens in a new tab)
Status
Analyzed
Updated
17 Jun 2026
Assigner
cve@mitre.org

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References 6

Exploit code 2

Advisories 2

Other references 2

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Wing FTP Server CVEs

Every Wing FTP Server CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2025-47813 Wing FTP Server Information Disclosure Vulnerability KEV EPSS 63% 4.3, medium

Beyond this page

Is CVE-2025-47812 in your network?

This page tells you how dangerous CVE-2025-47812 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

CVE-2025-47812 is in the CISA catalogue of exploited vulnerabilities: attackers are already exploiting it.

  • EXYS7600 OCELOT

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    Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2025-47812 comes with the devices to patch.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.