On 20 August 2026, Microsoft disclosed CVE-2026-69836, a maximum-severity CVSS 10.0 flaw in Entra ID (formerly Azure AD): an unsafe deserialization bug (CWE-502) allowing unauthenticated remote code execution in Microsoft’s cloud-identity backbone — no account, no user interaction. Microsoft fixed it server-side (no customer action required), and an initial “exploited” tag was later retracted — there’s no confirmed exploitation.
Why this matters for a business in Cyprus
Most Cyprus companies run Microsoft 365 and Azure, so Entra ID is the front door to email, files and dozens of SaaS apps. A flaw like this exposes a governance gap: you depend entirely on the vendor, with no version to verify and no exploitation log of your own. “Nothing to patch” is not “nothing to do” — and any identity compromise that leaks personal data is a GDPR / NIS2 reportable breach.
What to check now
- Review standing access: unusual sign-ins, new app registrations, altered service-principal permissions, anomalous OAuth consents — a provider fix doesn’t revoke already-issued tokens.
- Tighten Conditional Access and MFA so any single identity compromise is worth less.
- Monitor Entra sign-in / audit logs for token abuse and wire them into a SIEM.
- Treat identity as its own perimeter and test it regularly.
How we help
Cloud identity is the primary perimeter. For Cyprus organisations we run a targeted Azure AD / Entra ID security assessment, Azure penetration testing, and an assumed-breach assessment to show how far an identity foothold could reach. Get a fixed-price quote and we’ll review your Entra and cloud posture.
Sources: Microsoft MSRC security bulletin; The Hacker News, Help Net Security, The Register, Cybersecurity Dive.