CVE-2021-20489: IBM Sterling File Gateway

High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days.

IBM Sterling File Gateway 2.2.0.0 through 6.1.1.0 is vulnerable to cross-site request forgery which could allow an attacker to execute malicious and unauthorized actions transmitted from a user that the website trusts. IBM X-Force ID: 197790.

Affected products

• IBM Sterling File Gateway: from 2.2.0.0, up to and including 5.2.6.5_3; from 6.0.0.0, up to and including 6.0.0.6; from 6.0.1.0, up to and including 6.0.3.4; from 6.1.0.0, up to and including 6.1.0.3

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