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CVE Record

CVE-2020-3930: GeoVision Door Access Control Device - Information disclosure vulnerability

GeoVision Door Access Control device family improperly stores and controls access to system logs, any users can read these logs.

MediumCVSS 4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

GeoVision GV-GF192x door access control devices can expose system logs to any user. Logs may reveal operational details useful for reconnaissance, but the published CVSS limits impact to low confidentiality loss and does not indicate integrity or availability impact.

Executive priority

Treat this as a moderate physical-security technology risk. It is not described as actively exploited, but door access control logs can reveal sensitive operational patterns. Prioritize asset identification and vendor guidance review.

Technical view

CVE-2020-3930 describes improper storage and access control for system logs in the GeoVision Door Access Control Device family, specifically GV-GF192x. The CVSS v3.1 vector is AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N, indicating local, low-complexity unauthenticated access with limited confidentiality impact only.

Likely exposure

Organizations using GeoVision GV-GF192x door access control devices are the stated affected population. Exposure is most relevant where untrusted people can obtain local access to the device, its storage, or local management environment.

Exploitation context

The source bundle does not cite active exploitation, and the CVE is not listed as KEV. The main concern is unauthorized log access that may disclose device or operational details. Evidence does not support claiming remote exploitation.

Researcher notes

Available evidence is sparse: the bundle names the product family, GV-GF192x, and the log access-control issue, but does not provide CWE, affected firmware ranges, exploit details, or a confirmed fix. Avoid broad GeoVision impact assumptions.

Mitigation direction

  • Identify whether GeoVision GV-GF192x devices are deployed.
  • Check GeoVision or TWCERT guidance for vendor-supported remediation.
  • Restrict local access to device interfaces and storage.
  • Limit device management access to trusted personnel only.
  • Review logs for sensitive operational or credential-like data.
  • Monitor vendor advisories for firmware or configuration updates.

Validation and detection

  • Inventory door access control devices by model and firmware.
  • Confirm whether any deployed units are GV-GF192x.
  • Review local access controls around affected devices.
  • Verify system logs are not readable by unauthorized users.
  • 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-2020-3930 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
Medium
CVSS
4 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/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
4CVSS 3.1MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N2.51.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

4Medium
CVSS 3.1 vector shape for CVE-2020-3930Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/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
GeoVisionDoor Access Control DeviceGV-GF192xListed
Weakness

CWE details

No CWE listed

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