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CVE Record

CVE-2020-4792: IBM Edge 4.2 is vulnerable to cross-site scripting.

IBM Edge 4.2 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: 189441.

MediumCVSS 5.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

IBM Edge 4.2 has a Web UI cross-site scripting flaw. A logged-in user could place JavaScript into the interface, changing what another user sees or does and potentially exposing credentials inside a trusted session.

Executive priority

Treat this as a moderate-priority remediation item. It is not confirmed actively exploited, but it can affect trusted Web UI sessions and may expose credentials if IBM Edge 4.2 remains in use.

Technical view

The CVE describes XSS in IBM Edge 4.2 Web UI. CVSS 3.0 score is 5.4: network reachable, low complexity, low privileges required, user interaction required, changed scope, and low confidentiality and integrity impact.

Likely exposure

Exposure is limited to environments running IBM Edge 4.2, particularly where the Web UI is reachable by multiple users or broader networks. The source bundle does not identify other affected versions or products.

Exploitation context

The CVE is not listed as KEV in the provided bundle. The sources support a plausible authenticated Web UI attack with user interaction, but do not provide evidence of active exploitation in the wild.

Researcher notes

Key constraints are PR:L and UI:R. Validate exposure through version and Web UI reachability rather than assuming broad impact. The bundle does not include CWE mapping, exploit details, or complete remediation text.

Mitigation direction

  • Review IBM advisory 6439819 for official remediation guidance.
  • Inventory IBM Edge deployments and identify any version 4.2 systems.
  • Restrict Web UI access to trusted administrative networks and users.
  • Prioritize vendor-supported upgrades or fixes if IBM guidance provides them.
  • Monitor for unexpected scripts or UI changes in administrative sessions.

Validation and detection

  • Confirm whether IBM Edge 4.2 is deployed in the environment.
  • Verify whether the Web UI is externally reachable or broadly accessible internally.
  • Review IBM X-Force ID 189441 against asset inventory findings.
  • Check change records for any vendor fix or upgrade already applied.
  • Review logs for suspicious Web UI changes by low-privileged accounts.
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-2020-4792 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/A:N/AV:N/AC:L/S:C/PR:L/C:L/UI:R/I:L/E:H/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/A:N/AV:N/AC:L/S:C/PR:L/C:L/UI:R/I:L/E:H/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-2020-4792Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/A:N/AV:N/AC:L/S:C/PR:L/C:L/UI:R/I:L/E:H/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
IBMEdge4.2Listed
Weakness

CWE details

No CWE listed

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