Vulnerability · Published Jan 28, 2026 · Assigned by VulnCheck
CVE-2020-36964YATinyWinFTP - Denial of Service
Critical 9.8
In plain English
A critical-severity out-of-bounds write in YATinyWinFTP from ik80. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.5%top 59.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
YATinyWinFTP contains a denial of service vulnerability that allows attackers to crash the FTP service by sending a 272-byte buffer with a trailing space. Attackers can exploit the service by connecting and sending a malformed command that triggers a buffer overflow and service crash.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ik80 | YATinyWinFTP | 0.0.5 |
Weakness: CWE-787 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- ExploitDB-49127 exploit
- YATinyWinFTP GitHub Repository product
- VulnCheck Advisory: YATinyWinFTP - Denial of Service third-party-advisory