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CVE Record

CVE-2020-3921: Unisoon UltraLog Express - Sensitive Data Exposure

UltraLog Express device management software stores user’s information in cleartext. Any user can obtain accounts information through a specific page.

HighCVSS 8.6Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

UltraLog Express 1.4.0 can expose user account information in cleartext through a specific page. For an organization using this device management software, the main business risk is credential or account data disclosure, not system takeover or outage based on the provided sources.

Executive priority

Treat this as a high-priority confidentiality issue where UltraLog Express 1.4.0 is present. Prioritize exposure reduction and credential-risk review, while confirming vendor remediation because the provided sources do not name a patch.

Technical view

CVE-2020-3921 affects Unisoon UltraLog Express 1.4.0. The CVSS 3.1 vector is network-accessible, low complexity, no privileges, no user interaction, with high confidentiality impact and no stated integrity or availability impact. Sources do not name a CWE, patch version, or workaround.

Likely exposure

Exposure is limited to environments running Unisoon UltraLog Express 1.4.0, especially if the management interface is reachable from untrusted networks. The bundle lists other versions as unaffected by default but does not provide a complete product matrix.

Exploitation context

The CVE record says account information is obtainable through a specific page and scores the issue as remotely exploitable without privileges. CISA KEV status is false, and the provided sources do not confirm active exploitation or public weaponization.

Researcher notes

The strongest evidence is the CVE description and CVSS vector. The bundle does not provide exploit details, affected deployment prerequisites, CWE mapping, or fixed versions. Avoid assuming broader Unisoon product impact beyond UltraLog Express 1.4.0.

Mitigation direction

  • Inventory UltraLog Express deployments and identify version 1.4.0 instances.
  • Restrict UltraLog Express access to trusted administrative networks.
  • Check Unisoon or TWCERT guidance for any vendor-provided fix.
  • Rotate affected account credentials if exposure is suspected.
  • Monitor for unusual access to account-information pages.

Validation and detection

  • Confirm whether UltraLog Express 1.4.0 is installed anywhere.
  • Verify management interfaces are not internet-exposed.
  • Review web access logs for suspicious account-page requests.
  • Assess whether user account data is stored or displayed in cleartext.
  • Document compensating controls if no vendor fix is available.
Prepared
Confidence
medium
Sources
3

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-2020-3921 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
High
CVSS
8.6 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

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
2Source 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
8.6CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N3.94Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

8.6High
CVSS 3.1 vector shape for CVE-2020-3921Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

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
UnisoonUltraLog Express1.4.0unaffected
Weakness

CWE details

No CWE listed

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