CVE-2021-20584: IBM Sterling b2b Integrator

High severity, CVSS 7.5. EPSS: 1.4% chance of exploitation in the next 30 days.

IBM Sterling File Gateway 2.2.0.0 through 6.1.1.0 could allow a remote attacker to upload arbitrary files, caused by improper access controls. IBM X-Force ID: 199397.

Affected products

• IBM Sterling b2b Integrator: from 2.2.0.0, up to and including 5.2.6.5_4; from 6.0.0.0, up to and including 6.0.0.6; from 6.0.1.0, up to and including 6.0.3.4; from 6.1.0.0, up to and including 6.1.0.2

Published 2021-10-07. Last modified 2026-06-17.