CVE-2021-20375: IBM Sterling b2b Integrator

Medium severity, CVSS 6.5. EPSS: 0.8% chance of exploitation in the next 30 days.

IBM Sterling File Gateway 2.2.0.0 through 6.1.1.0 could allow an authenticated user to intercept and replace a message sent by another user due to improper access controls. IBM X-Force ID: 195567.

Affected products

• IBM Sterling b2b Integrator: from 2.2.0.0, up to and including 5.2.6.5_3; from 6.0.0.0, up to and including 6.0.3.4; from 6.1.0.0, up to and including 6.1.0.1

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