# Schneider Electric Harmony STW6 security bypass flaw

Published: 2026-10-13 · Severity: routine · Sectors: manufacturing, energy, infrastructure
Canonical: https://vorant.io/reports/1dfb4645-dbbb-5754-b5b8-19edb37674f0/schneider-electric-harmony-stw6-security-bypass-flaw

> CERT-FR advisory warns a vulnerability in all versions of Schneider Electric Harmony STW6 allows attackers to bypass security policy.

CERT-FR published an advisory describing CVE-2026-96434, a vulnerability affecting all versions of Schneider Electric Harmony STW6. The flaw allows an attacker to cause a security policy bypass. No exploitation in the wild is mentioned in the advisory.

Schneider Electric released security bulletin SEVD-2026-286-01 on 13 October 2026 with further details and patch guidance. Affected organizations, typically in industrial and manufacturing environments where Harmony products are deployed, should consult the vendor bulletin and apply available fixes.

## Mentioned in this report

- Vulnerabilities: CVE-2026-96434

Source reporting: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-1299

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