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Vulnerability Details :

CVE-2026-0393

Summary
Assigner-CERTVDE
Assigner Org ID-270ccfa6-a436-4e77-922e-914ec3a9685c
Published At-21 May, 2026 | 10:44
Updated At-21 May, 2026 | 13:22
Rejected At-
Credits

CODESYS Visualization - Insufficiently Protected Credentials

The affected product may expose credentials remotely between low privileged visualization users during concurrent login operations due to insufficient isolation of authentication data. The vulnerability affects only login operations within an active visualization session.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:CERTVDE
Assigner Org ID:270ccfa6-a436-4e77-922e-914ec3a9685c
Published At:21 May, 2026 | 10:44
Updated At:21 May, 2026 | 13:22
Rejected At:
▼CVE Numbering Authority (CNA)
CODESYS Visualization - Insufficiently Protected Credentials

The affected product may expose credentials remotely between low privileged visualization users during concurrent login operations due to insufficient isolation of authentication data. The vulnerability affects only login operations within an active visualization session.

Affected Products
Vendor
CODESYS GmbHCODESYS
Product
Visualization
Default Status
unaffected
Versions
Affected
  • From 1.0.0.0 before 4.10.0.0 (semver)
Problem Types
TypeCWE IDDescription
CWECWE-522CWE-522 Insufficiently Protected Credentials
Type: CWE
CWE ID: CWE-522
Description: CWE-522 Insufficiently Protected Credentials
Metrics
VersionBase scoreBase severityVector
4.06.9MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Version: 4.0
Base score: 6.9
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
finder
Silvan Schweizer from CTA AG
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://codesys.csaf-tp.certvde.com/.well-known/csaf/white/2026/advisory2026-07_vde-2026-052.json
vendor-advisory
Hyperlink: https://codesys.csaf-tp.certvde.com/.well-known/csaf/white/2026/advisory2026-07_vde-2026-052.json
Resource:
vendor-advisory
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:info@cert.vde.com
Published At:21 May, 2026 | 12:16
Updated At:21 May, 2026 | 16:04

The affected product may expose credentials remotely between low privileged visualization users during concurrent login operations due to insufficient isolation of authentication data. The vulnerability affects only login operations within an active visualization session.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.06.9MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Secondary
Version: 4.0
Base score: 6.9
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-522Primaryinfo@cert.vde.com
CWE ID: CWE-522
Type: Primary
Source: info@cert.vde.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://codesys.csaf-tp.certvde.com/.well-known/csaf/white/2026/advisory2026-07_vde-2026-052.jsoninfo@cert.vde.com
N/A
Hyperlink: https://codesys.csaf-tp.certvde.com/.well-known/csaf/white/2026/advisory2026-07_vde-2026-052.json
Source: info@cert.vde.com
Resource: N/A

Change History

0
Information is not available yet

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Matching Score-6
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ShareView Details
Matching Score-6
Assigner-CERT@VDE
CVSS Score-5.5||MEDIUM
EPSS-0.11% / 28.99%
||
7 Day CHG~0.00%
Published-11 Jul, 2022 | 10:40
Updated-16 Sep, 2024 | 20:38
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Plaintext Storage of a password in CODESYS V3 OPC DA Server

The CODESYS OPC DA Server prior V3.5.18.20 stores PLC passwords as plain text in its configuration file so that it is visible to all authorized Microsoft Windows users of the system.

Action-Not Available
Vendor-CODESYS GmbHMicrosoft Corporation
Product-windowsopc_da_serverCODESYS OPC DA Server
CWE ID-CWE-256
Plaintext Storage of a Password
CWE ID-CWE-522
Insufficiently Protected Credentials
Details not found