What is CVE-2021-20554?

CVE-2021-20554 is a medium-severity vulnerability in IBM Sterling Order Management, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-09-30.

How severe is CVE-2021-20554?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in IBM Sterling Order Management

CVE-2021-20554

IBM Sterling Order Management 9.4, 9.5, and 10.0 is vulnerable to cross-site scripting. 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. IBM X-Force ID: 199179.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-09-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (49.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

IBM Sterling Order Management — versions 9.4, 9.5, 10.0
IBM Sterling Order Management — versions 9.4.0, 9.5.0, 10

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.ibm.com/support/pages/node/6493881 (Patch, Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/199179 (VDB Entry, vdb-entry)

Frequently asked questions

What is CVE-2021-20554?: CVE-2021-20554 is a medium-severity vulnerability in IBM Sterling Order Management, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-09-30.
How severe is CVE-2021-20554?: Medium severity. CVSS v3 base score is 6.1 out of 10.