Biscom Secure File Transfer (SFT) 5.0.1000 through 5.0.1048 does not validate the dataFieldId value, and uses sequential numbers, which allows remote authenticated users to overwrite or read files via crafted requests. Version 5.0.1050 contains the fix.
Severity
CVSS 3.0
8.1 high
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
EPSS
1.1% chance of exploitation in the next 30 days; higher than 65% of CVEs (scores of 2026-10-31)