CVE-2011-10029

Solar FTP Server <= 2.1.1 Malformed USER Denial of Service

Published Aug 20, 2025 CVSS 4.0 · 8.7 High EPSS 1.1% KEV · Not listed
Description
Solar FTP Server fails to properly handle format strings passed to the USER command. When a specially crafted string containing format specifiers is sent, the server crashes due to a read access violation in the __output_1() function of sfsservice.exe. This results in a denial of service (DoS) condition.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2011-5252 Solar FTP Server fails to properly handle format strings passed to the USER command. When a specially crafted string containing format specifiers is sent, the server crashes due to a read access violation in the __output_1() function of sfsservice.exe. This results in a denial of service (DoS) condition.
History
Type Values Removed Values Added
First Time appeared Flexbyte
Flexbyte solar Ftp Server
CPEs cpe:2.3:a:flexbyte:solar_ftp_server:*:*:*:*:*:*:*:*
Vendors & Products Flexbyte
Flexbyte solar Ftp Server
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Description Solar FTP Server fails to properly handle format strings passed to the USER command. When a specially crafted string containing format specifiers is sent, the server crashes due to a read access violation in the __output_1() function of sfsservice.exe. This results in a denial of service (DoS) condition.
Title Solar FTP Server <= 2.1.1 Malformed USER Denial of Service
Weaknesses CWE-134
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
May 15, 2026, 11:13 AM
Reserved
Aug 19, 2025, 3:21 PM
Status
Deferred
Published
Aug 20, 2025, 4:15 PM
Modified
Jun 16, 2026, 11:28 PM