ComSndFTP FTP Server 1.3.7 Beta USER Command Ws2_32.dll WSACleanup format string

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in ComSndFTP FTP Server 1.3.7 Beta. Affected is the function WSACleanup in the library Ws2_32.dll of the component USER Command Handler. Performing a manipulation results in format string. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is known as CVE-2012-10055. Remote exploitation of the attack is possible. Furthermore, an exploit is available.

Detailsinfo

A vulnerability was found in ComSndFTP FTP Server 1.3.7 Beta. It has been classified as critical. This affects the function WSACleanup in the library Ws2_32.dll of the component USER Command Handler. The manipulation with an unknown input leads to a format string vulnerability. CWE is classifying the issue as CWE-134. The product uses a function that accepts a format string as an argument, but the format string originates from an external source. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

ComSndFTP FTP Server version 1.3.7 Beta contains a format string vulnerability in its handling of the USER command. By sending a specially crafted username containing format specifiers, a remote attacker can overwrite a hardcoded function pointer in memory (specifically WSACleanup from Ws2_32.dll). This allows the attacker to redirect execution flow and bypass DEP protections using a ROP chain, ultimately leading to arbitrary code execution. The vulnerability is exploitable without authentication and affects default configurations.

The weakness was published by Chaoyi Huang. It is possible to read the advisory at raw.githubusercontent.com. This vulnerability is uniquely identified as CVE-2012-10055 since 08/11/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Exploit-DB (19024). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Format string
CWE: CWE-134 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Exploit-DB: 🔒

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/11/2025 CVE reserved
08/13/2025 +2 days Advisory disclosed
08/13/2025 +0 days VulDB entry created
08/15/2025 +2 days VulDB entry last update

Sourcesinfo

Advisory: raw.githubusercontent.com
Researcher: Chaoyi Huang
Status: Not defined

CVE: CVE-2012-10055 (🔒)
GCVE (CVE): GCVE-0-2012-10055
GCVE (VulDB): GCVE-100-320055
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/13/2025 23:44
Updated: 08/15/2025 02:21
Changes: 08/13/2025 23:44 (74), 08/15/2025 02:21 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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