CVE-2026-6900

B&R Industrial Automation GmbH APROLVulnerabilityCVSS 9.1

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

No public exploitation has been reported so far. No distribution fix is listed yet; apply vendor mitigations and monitor.

Recommended action: Track your distribution's security tracker and apply the fix as soon as it ships.

CVE-2026-6900 B&R Industrial Automation GmbH APROL Vulnerability

Severity metrics

CVSS 4.0 : 9.1 CRITICAL · CVSS 3.1 : 7.4 HIGH

Attack vectorNetwork (remote)

Attack complexityLow

Attack requirementsPresent

Privileges requiredNone

User interactionNone

Confidentiality impactHigh

Integrity impactHigh

Availability impactNone

Subsequent confidentialityNone

Subsequent integrityNone

Subsequent availabilityNone

Vector: AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Affected & fixed versions by distribution

Versions are the native distribution strings (backport-aware): RHEL/Debian/SUSE backport fixes, so compare with the distro version comparator (dpkg / rpm / vercmp), not the upstream version.

No affected package in the tracked watchlist yet (Debian, Ubuntu, Arch, SUSE, Red Hat...). Triage may still be pending.

Sources

Advisory NVD CVE.org

Published 2026-07-06 · updated 2026-07-25 · source: NVD