CVE-2011-10029 HIGH

CVE-2011-10029: Solar FTP Server <= 2.1.1 Malformed USER Denial of Service

Vendor Flexbyte Software
Product Solar FTP Server
Weakness CWE-134
Published August 20, 2025
Last update May 15, 2026
View on NVD All CVEs

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS 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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

August 20, 2025 CVE published
May 15, 2026 Record updated