Read the docs
TI-2020-06823 Aliases CVE-2020-8503GHSA-9p6c-3rgf-xgf4

Biscom Secure File Transfer (SFT) 5.0.1050 through 5.1.1067 and 6.0.1000 through 6.0.1003…

Priority LOW 30CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-639.

Summary

Biscom Secure File Transfer (SFT) 5.0.1050 through 5.1.1067 and 6.0.1000 through 6.0.1003 allows Insecure Direct Object Reference (IDOR) by an authenticated sender because of an error in a file-upload feature. This is fixed in 5.1.1068 and 6.0.1004.

Why it matters now

EPSS 0.00731 54th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:biscom:secure_file_transfer:*:*:*:*:*:*:*:*5.0.1050 – 5.1.1067; 6.0.1000 – 6.0.1003VulnerableBiscom
  • cpe:2.3:a:biscom:secure_file_transfer:*:*:*:*:*:*:*:* Versions 5.0.1050 – 5.1.1067; 6.0.1000 – 6.0.1003 Vulnerable ·Biscom

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-8503
  2. 2026-10-03 Alias added: GHSA-9p6c-3rgf-xgf4

References

Advisory 1

  • TI-2020-07055 Biscom Secure File Transfer (SFT) before 5.1.1071 and 6.0.1xxx before 6.0.1005 allows… CVSS 3.1CRITICAL 9.8
  • TI-2016-08751 Biscom Secure File Transfer (SFT) 5.0.1000 through 5.0.1048 does not validate the… CVSS 3.0HIGH 8.1
  • TI-2020-16762 Biscom Secure File Transfer (SFT) before 5.1.1082 and 6.x before 6.0.1011 allows user credential theft. CVSS 3.1MEDIUM 6.5
  • TI-2017-03352 Cross-site scripting in Biscom Secure File Transfer CVSS 3.0MEDIUM 5.4
  • TI-2017-03357 Cross-site scripting in Biscom Secure File Transfer CVSS 3.0MEDIUM 5.4
  • TI-2017-03356 Injection in Biscom Secure File Transfer CVSS 3.0MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences