CVE-2019-6533 json
Registers used to store Modbus values can be read and written from the web interface without authentication in the PR100088 Modbus gateway…
published 2019-02-12 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-16092
- cvss
- 9.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 69%
- public exploits
- 0
- none known
Summary
Registers used to store Modbus values can be read and written from the web interface without authentication in the PR100088 Modbus gateway versions prior to Release R02 (or Software Version 1.1.13166).
Patch / fix
- kunbus pr100088_modbus_gateway_firmware r02
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
cisa ICSA-19-036-05 updated cvss 10.0
Kunbus PR100088 Modbus Gateway (Update B)
-
Kunbus PR100088 Modbus gateway < R02 (or Software Version 1.1.13166)affected: mitigation “These devices are not intended to be used in a public network. Rather, these devices are intended for use in an industrial environment with a protected network architecture.” kunbus.de
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
1.23% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| NVD | 2.0 | 6.4 | AV:N/AC:L/Au:N/C:P/I:P/A:N |
Affected products
- ICS-CERT PR100088 Modbus gateway
Classification
- Weakness
-
- CWE-306 Missing Authentication for Critical Functionality
References
-
ics-cert.us-cert.gov
/advisories/ICSA-19-036-05
mitigation, third-party-advisory, us-government-resource
Sources
- CVE List CVE-2019-6533
- NVD CVE-2019-6533
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.