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CVE Record

CVE-2021-20560: IBM Sterling Connect:Direct Browser User Interface 1.4.1.1 and 1.5.0.2 could allow a remote attacker to hij...

IBM Sterling Connect:Direct Browser User Interface 1.4.1.1 and 1.5.0.2 could allow a remote attacker to hijack the clicking action of the victim. By persuading a victim to visit a malicious Web site, a remote attacker could exploit this vulnerability to hijack the victim's click actions and possibly launch further attacks against the victim. IBM X-Force ID: 199229.

MediumCVSS 5.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This is a clickjacking issue in IBM Sterling Connect:Direct Browser User Interface. A victim could be tricked into visiting a malicious website that hijacks their clicks, potentially causing unintended actions. The business impact is moderate because user interaction is required and the documented confidentiality and integrity impacts are low.

Executive priority

Treat as a moderate-priority remediation item. It is not documented as actively exploited, but affected administrative or operational browser sessions could be abused through social engineering.

Technical view

CVE-2021-20560 affects IBM Sterling Connect:Direct Browser User Interface 1.4.1.1 and 1.5.0.2. The CVSS 3.0 score is 5.4, with network attack vector, low complexity, low privileges required, and user interaction required. Scope changes, confidentiality and integrity impacts are low, and availability is not impacted.

Likely exposure

Exposure is limited to organizations running IBM Sterling Connect:Direct Browser User Interface versions 1.4.1.1 or 1.5.0.2, especially where users can access the UI from browsers that may also reach untrusted websites.

Exploitation context

The provided sources do not show CISA KEV listing or active exploitation. The described attack requires persuading a victim to visit a malicious website, then abusing clickjacking to hijack the victim's click actions.

Researcher notes

The bundle identifies IBM X-Force ID 199229 and CVSS vector CVSS:3.0/S:C/PR:L/AC:L/C:L/AV:N/UI:R/A:N/I:L/E:U/RC:C/RL:O. No CWE is provided. Do not assume additional affected IBM products beyond the two listed Browser UI versions.

Mitigation direction

  • Review IBM advisory 6474829 for official remediation and fixed-version guidance.
  • Identify and prioritize affected Browser UI versions 1.4.1.1 and 1.5.0.2.
  • Restrict Browser UI access to trusted users and networks until vendor remediation is applied.
  • Educate privileged users against using administrative sessions while browsing untrusted sites.

Validation and detection

  • Inventory IBM Sterling Connect:Direct Browser UI deployments and record exact versions.
  • Confirm whether any deployment runs version 1.4.1.1 or 1.5.0.2.
  • Review IBM X-Force ID 199229 and IBM advisory details against deployed builds.
  • Check whether Browser UI access is limited to expected users and network paths.
Prepared
Confidence
high
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-2021-20560 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/S:C/PR:L/AC:L/C:L/AV:N/UI:R/A:N/I:L/E:U/RC:C/RL:O

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/S:C/PR:L/AC:L/C:L/AV:N/UI:R/A:N/I:L/E:U/RC:C/RL:O2.32.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

5.4Medium
CVSS 3.0 vector shape for CVE-2021-20560Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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
IBMSterling Connect:Direct Browser User Interface1.5.0.2, 1.4.1.1Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.