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CVE Record

CVE-2021-20528: IBM Control Center 6.2.0.0 is vulnerable to cross-site scripting.

IBM Control Center 6.2.0.0 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: 198761.

MediumCVSS 5.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

IBM Control Center 6.2.0.0 has a Web UI cross-site scripting flaw. A user could place JavaScript into the interface, changing what another trusted session sees or does and potentially exposing credentials. The issue is medium severity because it needs a logged-in user and user interaction, but it can affect confidentiality and integrity.

Executive priority

Treat as a moderate-priority remediation for environments using IBM Control Center 6.2.0.0. Prioritize faster if the Web UI is widely accessible or used by privileged administrators.

Technical view

CVE-2021-20528 is an IBM Control Center 6.2.0.0 XSS vulnerability tracked as IBM X-Force ID 198761. CVSS v3.0 is 5.4 with AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. Sources do not specify the exact input field, XSS variant, or remediation package.

Likely exposure

Exposure is limited to organizations running IBM Control Center 6.2.0.0, especially where the Web UI is reachable by authenticated users beyond a tightly controlled admin group.

Exploitation context

The source bundle does not show CISA KEV listing or cited active exploitation. Exploitation requires low privileges and user interaction, and the likely impact is script execution inside a trusted Web UI session.

Researcher notes

The bundle confirms affected version, CVSS, IBM X-Force ID, and general XSS impact. It does not include CWE mapping, vulnerable parameter details, exploit evidence, or a named fixed version, so validation should rely on IBM’s advisory.

Mitigation direction

  • Check IBM advisory guidance for the official fix or upgrade path.
  • Inventory IBM Control Center deployments and identify version 6.2.0.0.
  • Restrict Web UI access to trusted administrative networks and users.
  • Review suspicious UI content or unexpected credential prompts.
  • Rotate credentials if there is evidence of affected-session exposure.

Validation and detection

  • Confirm whether IBM Control Center 6.2.0.0 is deployed.
  • Verify the Web UI is not broadly reachable.
  • Check whether IBM’s recommended remediation has been applied.
  • Review logs for unusual authenticated Web UI activity.
  • Run only safe, authorized XSS validation in a non-production environment.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2021-20528 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.4 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/UI:R/S:C/AV:N/I:L/C:L/PR:L/A:N/AC:L/RL:O/E:H/RC:C

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.4CVSS 3.0MediumCVSS:3.0/UI:R/S:C/AV:N/I:L/C:L/PR:L/A:N/AC:L/RL:O/E:H/RC:C2.32.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

5.4Medium
CVSS 3.0 vector shape for CVE-2021-20528Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/UI:R/S:C/AV:N/I:L/C:L/PR:L/A:N/AC:L/RL:O/E:H/RC:C

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
IBMControl Center6.2.0.0Listed
Weakness

CWE details

No CWE listed

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