What’s Vulnerable › Vulnerabilities

CVE-2023-53886: Xlight FTP Server 3.9.3.6 Stack Buffer Overflow Vulnerability via Execute Program

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-12-15 · updated 2026-06-17
• Weakness: CWE-121

Description

Xlight FTP Server 3.9.3.6 contains a stack buffer overflow vulnerability in the 'Execute Program' configuration that allows attackers to crash the application. Attackers can trigger the vulnerability by inserting 294 characters into the program execution configuration, causing a denial of service condition.

Affected products

• Xlightftpd Xlight FTP Server: 3.9.3.6

References

• https://www.exploit-db.com/exploits/51665
• https://www.vulncheck.com/advisories/xlight-ftp-server-stack-buffer-overflow-vulnerability-via-execute-program
• https://www.xlightftpd.com/
• https://www.exploit-db.com/exploits/51665

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