wftpserver Wing FTP Server up to 7.4.3 null byte or nul character

CVSS Meta Temp Score
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CTI Interest Score
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9.7$0-$5k0.00

Summaryinfo

A vulnerability categorized as very critical has been discovered in wftpserver Wing FTP Server up to 7.4.3. This affects an unknown function. Such manipulation leads to improper neutralization of null byte or nul character. This vulnerability is documented as CVE-2025-47812. The attack can be executed remotely. Additionally, an exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in wftpserver Wing FTP Server up to 7.4.3. It has been rated as very critical. Affected by this issue is an unknown functionality. The manipulation with an unknown input leads to a improper neutralization of null byte or nul character vulnerability. Using CWE to declare the problem leads to CWE-158. The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes NUL characters or null bytes when they are sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

This vulnerability is handled as CVE-2025-47812 since 05/10/2025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/16/2025).

The exploit is available at exploit-db.com. It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 241999 (Wing FTP Server < 7.4.4 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. This issue was added on 07/14/2025 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 08/04/2025:

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Upgrading to version 7.4.4 eliminates this vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (52347), Tenable (241999) and EUVD (EUVD-2025-21009). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.7

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 10.0
CNA Vector (MITRE): 🔒

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper neutralization of null byte or nul character
CWE: CWE-158 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Attacked
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

KEV Added: 🔒
KEV Due: 🔒
KEV Remediation: 🔒
KEV Ransomware: 🔒
KEV Notice: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 241999
Nessus Name: Wing FTP Server < 7.4.4 Multiple Vulnerabilities

Exploit-DB: 🔒

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Wing FTP Server 7.4.4

Timelineinfo

05/10/2025 CVE reserved
07/10/2025 +61 days Advisory disclosed
07/10/2025 +0 days VulDB entry created
07/16/2025 +5 days VulDB entry last update

Sourcesinfo

Status: Confirmed

CVE: CVE-2025-47812 (🔒)
GCVE (CVE): GCVE-0-2025-47812
GCVE (VulDB): GCVE-100-316016
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/10/2025 19:42
Updated: 07/16/2025 01:36
Changes: 07/10/2025 19:42 (62), 07/10/2025 19:58 (1), 07/12/2025 08:17 (2), 07/14/2025 10:02 (4), 07/14/2025 20:39 (9), 07/15/2025 10:22 (1), 07/16/2025 01:36 (3)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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