Is CVE-2026-8603 actively exploited?

No active exploitation of CVE-2026-8603 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-8603 be exploited remotely?

Yes. CVE-2026-8603 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-8603?

CVE-2026-8603 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2026-8603

CRITICAL

CVE-2026-8603

CWE-78Published: May 19, 2026· Updated: May 21, 2026

9.8

CVSS v3.1

EPSS:0.34%probability of exploitation in 30 daysPercentile:57.1th

Official 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.

NVD Source

Risk Analysis

This critical vulnerability in ScadaBR 1.2.0 allows an attacker to execute commands as root on the SCADA system. The CVSS score of 9.8 indicates a severe risk, as successful exploitation grants full control over the affected system.

No public exploit is currently known for this vulnerability. However, its network-exploitable nature and low attack complexity make it a significant concern.

Recommended Action

Upgrade ScadaBR to a patched version if available. Implement strict network segmentation and access controls for SCADA systems to limit exposure.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2026-8603 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

scadabr1 product

scadabr

Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Exploit-DB

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

PacketStorm

Security advisories & exploits

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://www.cisa.gov/news-events/ics-advisories/icsa-26-139-03

News & Research Mentioning CVE-2026-8603

ScadaBR

CISA Alerts· May 19, 2026

View CSAF Summary Successful exploitation of these vulnerabilities could allow an attacker to perform unauthenticated remote code execution. The following versions of ScadaBR are affected: ScadaBR 1.2.0 (CVE-2026-8602, CVE-2026-8603, CVE-2026-8604, CVE-2026-8605) CVSS Vendor Equipment Vulnerabilities v3 9.1 ScadaBR ScadaBR Missing Authentication for Critical Function, Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'), Cross-Site Request Forgery (CSRF), Use of Hard-coded Credentials Background Critical Infrastructure Sectors: Critical Manufacturing, Dams, Chemical, Energy, Water and Wastewater Countries/Areas Deployed: Worldwide Company Headquarters Location: Brazil Vulnerabilities Expand All + CVE-2026-8602 In [xlite_meta score:79 src:CISA Alerts xlite_fp:1d9fabe4f5e8cdab4938dd5825bd7e549e7de4e3d7c6daae635b1e5dba298057]