CVE-2011-10029
Solar FTP Server <= 2.1.1 Malformed USER Denial of Service
- State
- Published
- Severity
- 8.7 High
- Published
- Aug 20, 2025
- Updated
- May 15, 2026
- Reserved
- Aug 19, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 | VulnCheck |
Weaknesses
- CWE-134 Use of Externally-Controlled Format String
Affected Products
| Product | Versions |
|---|---|
Solar FTP ServerFlexbyte Software |
|
References
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/auxiliary/dos/windows/ftp/solarftp_user.rbexploit
- https://www.exploit-db.com/exploits/16204exploit
- https://web.archive.org/web/20111102141514/https://solarftp.com/product
- https://web.archive.org/web/20111009122553/http://solarftp.com/blog/news/solar-ftp-server-2-1-2.htmlvendor-advisorypatch
- https://www.vulncheck.com/advisories/solar-ftp-server-malformed-user-dosthird-party-advisory
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