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CVE Record

CVE-2020-4805: IBM Edge 4.2 allows web pages to be stored locally which can be read by another user on the system.

IBM Edge 4.2 allows web pages to be stored locally which can be read by another user on the system. IBM X-Force ID: 189539.

MediumCVSS 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 can store web pages locally in a way that another user on the same system may read them. The business risk is unintended exposure of locally stored page content, especially on shared workstations or servers. The provided sources do not describe integrity impact, availability impact, or active exploitation.

Executive priority

Prioritize remediation for shared systems handling sensitive web content. This is not presented as a remote takeover issue, but it can expose confidential information between local users. Treat it as a moderate hygiene and confidentiality risk.

Technical view

CVE-2020-4805 is a local information disclosure issue in IBM Edge 4.2. CVSS 3.0 score is 4.0 with low confidentiality impact, local attack vector, low complexity, and no required privileges or user interaction. IBM X-Force tracks it as ID 189539.

Likely exposure

Exposure is most relevant where IBM Edge 4.2 runs on systems used by multiple local users or accounts. Single-user systems have lower practical exposure. The bundle identifies only IBM Edge 4.2 as affected.

Exploitation context

The source bundle marks KEV as false and CVSS exploit maturity as unproven. There is no provided evidence of active exploitation. Any assessment should treat exploitation as plausible local information disclosure, not confirmed real-world abuse.

Researcher notes

The public bundle provides limited technical depth: no CWE, no exploit narrative, and no specific fixed version. Keep scoping narrow to IBM Edge 4.2 and avoid extrapolating to other IBM products or browsers without vendor evidence.

Mitigation direction

  • Review the IBM advisory for the official remediation path.
  • Update or replace IBM Edge 4.2 according to IBM guidance.
  • Limit local account access on systems running IBM Edge 4.2.
  • Avoid shared use of affected systems until remediated.
  • Clear or protect locally stored web page data where operationally safe.

Validation and detection

  • Inventory endpoints and servers for IBM Edge 4.2 installations.
  • Check whether IBM's advisory remediation has been applied.
  • Assess whether affected systems are shared by multiple local users.
  • Review local storage permissions for cached or saved web page content.
  • Confirm no sensitive page content remains accessible across user accounts.
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-2020-4805 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
4 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/A:N/C:L/AV:L/AC:L/PR:N/I:N/UI:N/S:U/RL:O/E:U/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
4CVSS 3.0MediumCVSS:3.0/A:N/C:L/AV:L/AC:L/PR:N/I:N/UI:N/S:U/RL:O/E:U/RC:C2.51.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

4Medium
CVSS 3.0 vector shape for CVE-2020-4805Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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