CVE-2026-8603
CVE-2026-8603 is a critical-severity vulnerability in Scadabr with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v4: 8.7
- EPSS exploit prediction: 1% (67th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-30961
- Weakness: CWE-78
- Affected product: Scadabr
- Published:
- Last modified:
Description
In ScadaBR version 1.2.0, an OS Command Injection vulnerability could allow an attacker to execute commands as root on the SCADA system.
Frequently asked questions
- What is CVE-2026-8603?
- In ScadaBR version 1.2.0, an OS Command Injection vulnerability could allow an attacker to execute commands as root on the SCADA system.
- How severe is CVE-2026-8603?
- CVE-2026-8603 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-8603 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-8603?
- CVE-2026-8603 affects Scadabr. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-8603?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2026-8603 have an EU (EUVD) identifier?
- Yes. CVE-2026-8603 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30961.
- When was CVE-2026-8603 published?
- CVE-2026-8603 was published on 2026-05-19 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:scadabr:scadabr:1.2:*:*:*:*:*:*:*
More vulnerabilities in Scadabr
- CVE-2026-8605 — Critical (CVSS 9.8): In ScadaBR version 1.2.0, a Use of Hard-Coded Credentials vulnerability could allow an attacker to access the SCADA…
- CVE-2026-8602 — Critical (CVSS 9.1): In ScadaBR version 1.2.0, a Missing Authentication for Critical Function vulnerability could allow an unauthenticated…
- CVE-2026-8604 — High (CVSS 8.8): In ScadaBR version 1.2.0, a CSRF vulnerability could allow an attacker to trigger any authenticated action through a…
- CVE-2021-26828 — High (CVSS 8.8): OpenPLC ScadaBR through 0.9.1 on Linux and through 1.12.4 on Windows allows remote authenticated users to upload and…
- CVE-2019-16344 — Medium (CVSS 6.1): A cross-site scripting (XSS) vulnerability in the login form (/ScadaBR/login.htm) in ScadaBR 1.0CE allows a remote…
- CVE-2019-16321 — Medium (CVSS 6.1): ScadaBR 1.0CE, and 1.1.x through 1.1.0-RC, has XSS via a request for a nonexistent resource, as demonstrated by the…
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