CVE-2019-25681
Xlight FTP Server 3.9.1 SEH Overwrite Buffer Overflow
- State
- Published
- Severity
- 8.6 High
- Published
- Apr 5, 2026
- Updated
- Apr 6, 2026
- Reserved
- Apr 5, 2026
Description
Xlight FTP Server 3.9.1 contains a structured exception handler (SEH) overwrite vulnerability that allows local attackers to crash the application and overwrite SEH pointers by supplying a crafted buffer string. Attackers can inject a 428-byte payload through the program execution field in virtual server configuration to trigger a buffer overflow that corrupts the SEH chain and enables potential code execution.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.6 High | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 8.4 High | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-787 Out-of-bounds Write
Affected Products
| Product | Versions |
|---|---|
XlightXlightftpd |
|
References
- ExploitDB-46458exploit
- Official Product Homepageproduct
- Product Referenceproduct
- VulnCheck Advisory: Xlight FTP Server 3.9.1 SEH Overwrite Buffer Overflowthird-party-advisory
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