CVE-2020-12068Network attack vector

Unauthenticated restricted-screen access via missing start-screen checks

Published May 14, 2020 · Updated Aug 4, 2024

Improper privilege management in CODESYS V3 Visualization before 3.5.16.0 allows remote attackers to access restricted screens. Generated WebVisu and Remote TargetVisu code fails to limit direct screen access to configured start visualizations, leaving hidden or navigation-gated screens reachable. Exposure requires the visualization feature and a project that protects only navigation elements or includes otherwise unreachable screens; access is limited to operator-restricted screens.

CVSS severity6.5
Medium
EPSS probability0.92%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper privilege management in CODESYS V3 Visualization before 3.5.16.0 allows remote attackers to access restricted screens. Generated WebVisu and Remote TargetVisu code fails to limit direct screen access to configured start visualizations, leaving hidden or navigation-gated screens reachable. Exposure requires the visualization feature and a project that protects only navigation elements or includes otherwise unreachable screens; access is limited to operator-restricted screens.

The record

CVE
CVE-2020-12068
Published
May 14, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 14, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
6.4NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:N
6.53S-Smart Software Solutions GmbHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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