How severe is CVE-2021-20336?

CVE-2021-20336 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-20336 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-20336?

CVE-2021-20336 affects Ibm Tivoli Netcool/omnibus Webgui. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-20336?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-20336 published?

CVE-2021-20336 was published on 2021-03-11 and last updated on 2026-06-17.

CVE-2021-20336

CVE-2021-20336 is a medium-severity vulnerability in Ibm Tivoli Netcool/omnibus Webgui with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Ibm Tivoli Netcool/omnibus Webgui
Published: 2021-03-11
Last modified: 2026-06-17

Description

IBM Tivoli Netcool/OMNIbus_GUI 8.1.0 is vulnerable to stored 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.

Frequently asked questions

What is CVE-2021-20336?: IBM Tivoli Netcool/OMNIbus_GUI 8.1.0 is vulnerable to stored 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.
How severe is CVE-2021-20336?: CVE-2021-20336 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-20336 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-20336?: CVE-2021-20336 affects Ibm Tivoli Netcool/omnibus Webgui. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-20336?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-20336 published?: CVE-2021-20336 was published on 2021-03-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ibm:tivoli_netcool\/omnibus_webgui:8.1.0:*:*:*:*:*:*:*

More vulnerabilities in Ibm Tivoli Netcool/omnibus Webgui

CVE-2021-29856 — Medium (CVSS 6.5): IBM Tivoli Netcool/OMNIbus_GUI 8.1.0 could allow an authenticated usre to cause a denial of service through the WebGUI…
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CVE-2021-29819 — Medium (CVSS 5.4): IBM Jazz for Service Management and IBM Tivoli Netcool/OMNIbus_GUI 8.1.0 is vulnerable to cross-site scripting. This…
CVE-2021-29818 — Medium (CVSS 5.4): IBM Jazz for Service Management and IBM Tivoli Netcool/OMNIbus_GUI 8.1.0 is vulnerable to cross-site scripting. This…

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