Buffer overflow in Ik80 Yatinywinftp
CVE-2020-36964
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (36.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.000
Affected products
- Ik80 Yatinywinftp — versions 0.0.5
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/49127 (exploit)
- github.com/ik80/YATinyWinFTP (product)
- www.vulncheck.com/advisories/yatinywinftp-denial-of-service (third-party-advisory)
Frequently asked questions
- What is CVE-2020-36964?
- CVE-2020-36964 is a critical-severity vulnerability in Ik80 Yatinywinftp, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2026-01-28.
- How severe is CVE-2020-36964?
- Critical severity. CVSS v3 base score is 9.8 out of 10.