What is CVE-2026-8602?

CVE-2026-8602 is a critical-severity vulnerability in Scadabr, classified under Missing Authentication for Critical Function. CVSS score: 9.1/10. Published 2026-05-19.

How severe is CVE-2026-8602?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Auth bypass in Scadabr

CVE-2026-8602

In ScadaBR version 1.2.0, a Missing Authentication for Critical Function vulnerability could allow an unauthenticated attacker to send a HTTP GET requests to the SCADA system and inject arbitrary sensor readings.

Vulnerability class: Broken Authentication

Published 2026-05-19 · last modified 2026-07-23.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (46.6th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 46.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.001

Affected products

Scadabr — versions 1.2, 1.2.0

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

www.cisa.gov/news-events/ics-advisories/icsa-26-139-03 (US Government Resource, Third Party Advisory, government-resource)

Frequently asked questions

What is CVE-2026-8602?: CVE-2026-8602 is a critical-severity vulnerability in Scadabr, classified under Missing Authentication for Critical Function. CVSS score: 9.1/10. Published 2026-05-19.
How severe is CVE-2026-8602?: Critical severity. CVSS v3 base score is 9.1 out of 10.