Privilege escalation via B&R Automation Studio upgrade service
Priority LOW 33CWE-264Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-264.
Summary
A privilege escalation vulnerability in the upgrade service in B&R Automation Studio versions 4.0.x, 4.1.x, 4.2.x, < 4.3.11SP, < 4.4.9SP, < 4.5.4SP, <. 4.6.3SP, < 4.7.2 and < 4.8.1 allow authenticated users to delete arbitrary files via an exposed interface.
Why it matters now
EPSS 0.00274 19th percentileScored 2026-11-07
Fix Fixed Automation Studio (B&R): 4.3.11SP, 4.4.9SP, 4.5.4SP +3
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| B&R Industrial Automation | Automation Studio | 4.0.x; 4.1.x; 4.2.x; before 4.3.11SP; before 4.4.9SP; before 4.5.4SP; before 4.6.3SP; before 4.7.2; before 4.8.1 | 4.3.11SP, 4.4.9SP, 4.5.4SP, 4.6.3SP, 4.7.2, 4.8.1 | Patch available | CNA |
- Automation Studio VendorB&R Industrial Automation Affected 4.0.x; 4.1.x; 4.2.x; before 4.3.11SP; before 4.4.9SP; before 4.5.4SP; before 4.6.3SP; before 4.7.2; before 4.8.1 Fixed in 4.3.11SP, 4.4.9SP, 4.5.4SP, 4.6.3SP, 4.7.2, 4.8.1 Patch available CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:br-automation:automation_studio:*:*:*:*:*:*:*:* | 4.0 – 4.0.29.87; 4.1 – 4.1.17.113; 4.2 – 4.2.14.119; 4.3 to before 4.3.11; 4.4 to before 4.4.9; 4.5 to before 4.5.4; 4.6 to before 4.6.3; 4.7 to before 4.7.2 | Vulnerable | B&R Industrial Automation |
| cpe:2.3:a:br-automation:automation_studio:4.8:*:*:*:*:*:*:* | 4.8 | Vulnerable | B&R Industrial Automation |
- cpe:2.3:a:br-automation:automation_studio:*:*:*:*:*:*:*:* Versions 4.0 – 4.0.29.87; 4.1 – 4.1.17.113; 4.2 – 4.2.14.119; 4.3 to before 4.3.11; 4.4 to before 4.4.9; 4.5 to before 4.5.4; 4.6 to before 4.6.3; 4.7 to before 4.7.2 Vulnerable ·B&R Industrial Automation
- cpe:2.3:a:br-automation:automation_studio:4.8:*:*:*:*:*:*:* Versions 4.8 Vulnerable ·B&R Industrial Automation
Remediation
- Fix · CNA Automation Studio (B&R) Fixed in 4.3.11SP, 4.4.9SP, 4.5.4SP, 4.6.3SP, 4.7.2, 4.8.1
Timeline
- 2026-10-02 Threatist record created from CVE-2019-19100
- 2026-10-03 Alias added: GHSA-hcfw-8p6f-qf35
References
More B&R Industrial Automation Automation Studio vulnerabilities
- TI-2019-13790 B&R Automation Runtime SNMP Authentication and Authorization Weakness CVSS 3.1CRITICAL 9.4
- TI-2020-15148 Automation Studio and PVI Multiple incorrect permission assignments for services CVSS 3.1HIGH 8.8
- TI-2024-00198 B&R products use insufficient communication encryption CVSS 3.1HIGH 8.3
- TI-2021-05260 RCE in B&R Automation Studio with crafted project files CVSS 3.1HIGH 8.3
- TI-2020-15149 Automation Studio and PVI Multiple unquoted service path vulnerabilities CVSS 3.1HIGH 7.8
- TI-2019-13785 Zip Slip vulnerability in 3rd-Party library in B&R Automation Studio upgrade service CVSS 3.1HIGH 7.5
Sources
- CVE-2019-19100 · CVE Program
- CVE-2019-19100 · NVD
- FIRST EPSS
- GHSA-hcfw-8p6f-qf35 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences