CVE-2019-19101 json
Incomplete communication encryption and validation in B&R Automation Studio upgrade service
published 2020-04-29 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-8738
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 44%
- public exploits
- 0
- none known
Summary
A missing secure communication definition and an incomplete TLS validation 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, < 4.5.5SP, < 4.6.4 and < 4.7.2 enable unauthenticated users to perform MITM attacks via the B&R upgrade server.
Patch / fix
- br-automation automation_studio 4.3.11, 4.4.9, 4.5.5, 4.6.4, 4.7.2
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
cisa ICSA-20-093-01 updated cvss 6.5
B&R Automation Studio
-
B&R Industrial Automation Automation Studio < 4.4.9SP, < 4.6.3SP, 4.1.x, < 4.7.2affected: vendor fix, mitigation “Access to zip archives is controlled and access of the zip archive is limited to trusted parties only.” br-automation.com
From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf
Exploit prediction
0.53% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
| NVD | 3.1 | 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
Affected products
- B&R Automation Studio
Classification
References
-
br-automation.com
/en/downloads/032020-multiple-vulnerabilities-in-automation-studio/
broken-link, vendor-advisory
Sources
- CVE List CVE-2019-19101
- NVD CVE-2019-19101
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.