What’s Vulnerable › Vulnerabilities

CVE-2019-25361: Ayukov NFTP client 1.71 - 'SYST' Buffer Overflow

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-18 · updated 2026-06-17
• Weakness: CWE-121

Description

Ayukov NFTP client 1.71 contains a buffer overflow vulnerability in the SYST command handling that allows remote attackers to execute arbitrary code. Attackers can send a specially crafted SYST command with oversized payload to trigger a buffer overflow and execute a bind shell on port 5150.

Affected products

• Ayukov NFTP client: 1.71

References

• http://ayukov.com/nftp/
• https://www.exploit-db.com/exploits/47576
• https://www.vulncheck.com/advisories/ayukov-nftp-client-syst-buffer-overflow

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