Microsoft’s May 2026 update fixes 137 vulnerabilities, including 30 Critical RCE and EoP flaws. Prioritize patches for Netlogon, Office, and M365 Copilot now.
SSO Bypass
Sentry reveals a critical 9.1 CVSS flaw (CVE-2026-42354) in SAML SSO. Multi-org instances are at risk of account takeover via identity linking. Patch now!
A critical FortiGate SSO flaw (CVSS 9.1) is under active exploitation, letting unauthenticated attackers bypass login via crafted SAML. The flaw is armed by default registration, risking config exfiltration. Patch immediately.
A sophisticated phishing campaign uses salary review lures to target M365/Okta SSO. Attackers proxy the login page to preserve customization and hijack critical session tokens via dynamic redirection.
A Critical (CVSS 9.1) flaw in Fortinet's FortiCloud SSO allows unauthenticated admin bypass by forging SAML messages (Improper Signature Verification). The feature is often auto-enabled. Update or disable immediately.