CVE-2012-10055

ComSndFTP v1.3.7 Beta USER Format String RCE

Published Aug 13, 2025 CVSS 4.0 · 9.3 Critical EPSS 2.6% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2012-6606 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.
History
Type Values Removed Values Added
First Time appeared Cerberusftp
Cerberusftp ftp Server
CPEs cpe:2.3:a:cerberusftp:ftp_server:1.3.7_beta:*:*:*:*:*:*:*
Vendors & Products Cerberusftp
Cerberusftp ftp Server
Type Values Removed Values Added
First Time appeared Comsndftp
Comsndftp ftp Server
Vendors & Products Comsndftp
Comsndftp ftp Server
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title ComSndFTP v1.3.7 Beta USER Format String RCE
Weaknesses CWE-134
References
Metrics cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Jul 15, 2026, 1:23 AM
Reserved
Aug 11, 2025, 6:15 PM
Status
Deferred
Published
Aug 13, 2025, 9:15 PM
Modified
Jun 16, 2026, 11:38 PM