CVE-2021-20489

Name: CVE-2021-20489
Creator: NVD / NIST
Published: 2021-10-07T18:15:08.077+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.38%

Last modified Jun 17, 2026

CVE-2021-20489 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

0.38%

30.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
Ibm	Sterling File Gateway	>= 2.2.0.0, <= 5.2.6.5_3
Ibm	Sterling File Gateway	>= 6.0.0.0, <= 6.0.0.6
Ibm	Sterling File Gateway	>= 6.0.1.0, <= 6.0.3.4
Ibm	Sterling File Gateway	>= 6.1.0.0, <= 6.1.0.3

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/197790VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6496777Patch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/197790VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6496777Patch, Vendor Advisory

Timeline

Published: Oct 7, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-20489?

How severe is CVE-2021-20489?

CVE-2021-20489 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.

How do I fix CVE-2021-20489?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-20489?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST