LiveActive security incident?Get immediate response
CVE Record

CVE-2020-3928: GeoVision Door Access Control Device - Hardcoded privileged password

GeoVision Door Access Control device family is hardcoded with a root password, which adopting an identical password in all devices.

MediumCVSS 6.2Not KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

Affected GeoVision door access controllers share a hardcoded privileged root password across devices. If an attacker has local access to a device, they may be able to obtain highly sensitive access without unique credentials. This is operationally important because door access systems are tied to physical security.

Executive priority

Treat this as a moderate-priority physical security technology risk. It is not documented as remotely exploitable in the supplied sources, but shared privileged credentials in door-control systems warrant prompt inventory, vendor guidance review, and compensating controls.

Technical view

CVE-2020-3928 affects GeoVision GV-AS210, GV-AS410, GV-AS810, GV-GF192x, and GV-AS1010 devices. The issue is a hardcoded root password reused across the device family. The published CVSS 3.1 vector is AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N with score 6.2.

Likely exposure

Exposure is most likely in facilities using the listed GeoVision door access control models, especially where devices are physically reachable, poorly segmented, or managed without compensating controls. The source bundle does not identify affected firmware ranges or internet exposure requirements.

Exploitation context

The CVSS vector indicates local access is required, with low complexity and no prior privileges or user interaction. KEV status is false, and the provided sources do not state active exploitation or public exploit availability.

Researcher notes

Evidence is limited to the CVE record and TW-CERT reference summarized in the source bundle. No CWE, firmware range, patch version, or exploitation detail is provided. Avoid assuming remote reachability or a universal remediation path without vendor documentation.

Mitigation direction

  • Check GeoVision and TW-CERT guidance for model-specific fixes or replacement advice.
  • Restrict physical and administrative access to affected controllers.
  • Place door access controllers on isolated management networks.
  • Review whether affected devices can disable or replace default privileged access.
  • Monitor access-control systems for unexpected administrative logins or configuration changes.

Validation and detection

  • Inventory GeoVision door access controllers by model number.
  • Confirm whether GV-AS210, GV-AS410, GV-AS810, GV-GF192x, or GV-AS1010 are deployed.
  • Check vendor advisory status for available firmware or configuration guidance.
  • Review network segmentation and physical access controls around deployed devices.
  • Document residual risk if no vendor remediation 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

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

description · low confidence lookup

Credential and access behavior lookup

The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2020-3928 mapping review

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

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.2 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/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
6.2CVSS 3.1MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N2.53.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

6.2Medium
CVSS 3.1 vector shape for CVE-2020-3928Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/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
GeoVisionDoor Access Control DeviceGV-AS210, GV-AS410, GV-AS810, GV-GF192x, GV-AS1010Listed
Weakness

CWE details

No CWE listed

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