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CVE-2026-6900 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

Improper certificate validation vulnerability in B&R Industrial Automation GmbH APROL. This issue affects APROL: before R 4.4-01P5.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:4.2 MEDIUMVector:CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

CNA: [email protected]CVSS-B:7.4 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://br-cws-assets.de-fra-1.linodeobjects.com/SA26P011-661853b7.pdf	[email protected]	AdvisoryBundleRemedyVendor

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-295	Improper Certificate Validation	[email protected]

Affected Products

Product	Versions
B&R Industrial Automation APROL	< R 4.4-01P5
CPE cpe:2.3:a:br-automation:industrial_automation_aprol:::::::: Remediation Upgrade: R 4.4-01P5moderate effort Workaround:low effort Enable TLS Certificate Verification System-Wide: Add the following configuration directive to the file /etc/openldap/ldap.conf: TLS_REQCERT demand Configure Certificate Verification for Each User Account: Each Linux user account (engineering, runtime, and operator accounts) needs its own configuration file that points to where its issuer certificates are stored. Create a .ldaprc file in the home directory of each account and add the appropriate certificate directory path. For Engineering Accounts: Create /home/<username>/.ldaprc and add: TLS_CACERTDIR /home/<username>/ENGIN/cnf/GLOBAL_ENGINEERING/LDAP/issuers/ For Runtime and Operator Accounts: Create /home/<username>/.ldaprc and add: TLS_CACERTDIR /home/<username>/RUNTIME/cnf/GLOBAL/LDAP/issuers/ Replace <username> with the actual Linux user account name. Prepare the Certificate Directories: For each issuer certificate directory you created above, run this command to enable certificate verification: openssl rehash <issuer certificate directory> This command indexes the certificates so the system can find them quickly during verification. Deploy Trusted Certificates: When you configure an external LDAP server, manually copy the server's trusted issuer certificate to the appropriate directories you created in "Configure Certificate Verification for Each User Account".

Product

Versions

B&R Industrial Automation APROL

< R 4.4-01P5

CPE

cpe:2.3:a:br-automation:industrial_automation_aprol:*:*:*:*:*:*:*:*

Remediation

Upgrade: R 4.4-01P5moderate effort
Workaround:low effort
Enable TLS Certificate Verification System-Wide: Add the following configuration directive to the file /etc/openldap/ldap.conf: TLS_REQCERT demand Configure Certificate Verification for Each User Account: Each Linux user account (engineering, runtime, and operator accounts) needs its own configuration file that points to where its issuer certificates are stored. Create a .ldaprc file in the home directory of each account and add the appropriate certificate directory path. For Engineering Accounts: Create /home/<username>/.ldaprc and add: TLS_CACERTDIR /home/<username>/ENGIN/cnf/GLOBAL_ENGINEERING/LDAP/issuers/ For Runtime and Operator Accounts: Create /home/<username>/.ldaprc and add: TLS_CACERTDIR /home/<username>/RUNTIME/cnf/GLOBAL/LDAP/issuers/ Replace <username> with the actual Linux user account name. Prepare the Certificate Directories: For each issuer certificate directory you created above, run this command to enable certificate verification: openssl rehash <issuer certificate directory> This command indexes the certificates so the system can find them quickly during verification. Deploy Trusted Certificates: When you configure an external LDAP server, manually copy the server's trusted issuer certificate to the appropriate directories you created in "Configure Certificate Verification for Each User Account".

Change History

2 change records found show changes

Date	Action	Recorded By
Jul 6, 2026	CVE Modified	CISA-ADP
Jul 6, 2026	New CVE Received	[email protected]