# CVE-2026-8603: ScadaBR missing authentication for sensor data injection

Source: https://junglewise.ai/threats/cve-2026-8602-scadabr-missing-authentication-for-sensor-data-injection  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-19. Updated: 2026-05-19  
License: CC BY 4.0 with a link back

CVE-2026-8603 · Severity: high · CVSS 9.1 · Published 2026-05-19

ScadaBR is an open-source software platform used for monitoring and controlling industrial processes in sectors like energy, water, and manufacturing. A security flaw allows unauthorized individuals to send commands to the system without logging in, enabling them to submit fake sensor data. This could lead to incorrect operational decisions, equipment damage, or safety risks by tricking operators into believing a process is in a state it is not.

## Quick answers

**Is CVE-2026-8603 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-8603 being exploited in the wild.

**How severe is CVE-2026-8603?** High severity, with a CVSS score of 9.1, published 19 May 2026.

**Which products and versions are affected?** ScadaBR ScadaBR 1.2.0.

**Is there a fix for CVE-2026-8603?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-8603 attacked?** It is attacked over the network, in an operating system.

**Am I affected by CVE-2026-8603?** Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A Missing Authentication for Critical Function vulnerability (CWE-306) exists in ScadaBR version 1.2.0. The flaw allows an unauthenticated attacker with network access to the SCADA system to send crafted HTTP GET requests that bypass security checks. By exploiting this, an attacker can inject arbitrary sensor readings, potentially compromising the integrity of the industrial process monitoring and causing operational disruptions. As of the advisory date, the vendor has not responded to mitigation requests, and users are advised to isolate control systems from the internet and use VPNs for remote access.

## Affected products

- ScadaBR ScadaBR 1.2.0

## Identifiers

- CVE-2026-8603
- CVE-2026-8604
- CVE-2026-8605
- CVE-2026-8602

## Timeline

- 2026-05-19: advisory: CISA and NVD published the advisory (ICSA-26-139-03)

## References

- [https://www.cisa.gov/news-events/ics-advisories/icsa-26-139-03](https://www.cisa.gov/news-events/ics-advisories/icsa-26-139-03)