CVE-2020-4987

Name: CVE-2020-4987
Creator: NVD / NIST
Published: 2021-05-04T16:15:07.827+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.50%

Last modified Jun 17, 2026

CVE-2020-4987 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. The IBM FlashSystem 900 user management GUI is vulnerable to stored cross-site scripting in code versions 1.5.2.8 and prior and 1.6.1.2 and prior. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.. EPSS estimates a 0.50% chance of exploitation in the next 30 days.

Description

The IBM FlashSystem 900 user management GUI is vulnerable to stored cross-site scripting in code versions 1.5.2.8 and prior and 1.6.1.2 and prior. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.50%

38.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Ibm	Flashsystem 900 Firmware	< 1.5.2.9
Ibm	Flashsystem 900 Firmware	>= 1.6.0.0, < 1.6.1.3

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/192702VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6449280Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/192702VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6449280Vendor Advisory

Timeline

Published: May 4, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-4987?

How severe is CVE-2020-4987?

CVE-2020-4987 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.50% probability of exploitation in the next 30 days.

How do I fix CVE-2020-4987?

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-2020-4987?

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

Scan your code now

Source: NVD / NIST