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CVE-2012-10055

ComSndFTP v1.3.7 Beta USER Format String RCE

Critical9.3EPSS 2.4%
Published
Updated
Reserved
Assigned by
VulnCheck

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.

Scores

CVSS scores of CVE-2012-10055, by who scored it
Scored byCVSSScoreVector
VulnCheckCNA (assigner)4.0Critical9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
NVDNVD · Deferred4.0Critical9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS (exploitation in 30 days)
2.4% · top 16% of all CVEs (2 Nov 2026)
CISA SSVC
Exploitation: poc · Automatable: yes · Technical impact: total

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The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.3.

Weakness

Affected products

  • ComSndFTP · FTP Server

    • affected 1.3.7 Beta

References (5)

Sources

The same CVE in the primary databases and aggregators, to check against.

Record last updated .