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.

CVSS v4.0

8.7 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.40% chance of exploitation in the next 30 days, 34th percentile

Published

2026-01-28

Updated

2026-01-29

Proof-of-concept exploits (1)

• https://www.exploit-db.com/exploits/49127

References

• CVE Record
• NVD entry

Related

• CVE-2020-36963
• CVE-2020-36965
• CVE-2020-36962
• CVE-2020-36966
• CVE-2020-36961
• CVE-2020-36967