Critical Microsoft Vulnerabilities Double in 2025, Elevating Privilege Risks Across Cloud Services
What Happened — Microsoft disclosed 1,273 vulnerabilities for 2025, but the count of critical flaws surged from 78 to 157—a 100% increase year‑over‑year. Elevation‑of‑privilege (EoP) bugs now represent 40 % of all CVEs, and critical issues in Azure and Dynamics 365 rose from 4 to 37.
Why It Matters for TPRM
- Critical flaws enable silent privilege escalation, turning routine access into full‑blown breaches.
- Cloud‑native platforms (Azure, Dynamics 365) are core to many third‑party services; a single exploitable misconfiguration can compromise an entire supply chain.
- The shift from noisy exploits to stealthy EoP attacks raises the likelihood of undetected lateral movement across vendor environments.
Who Is Affected — Enterprises relying on Microsoft cloud services (Azure, Dynamics 365), SaaS providers built on Microsoft platforms, and any third‑party that integrates Microsoft identity or API services.
Recommended Actions
- Re‑evaluate vendor risk scores for Microsoft‑based services; prioritize those with high critical‑vuln exposure.
- Verify that cloud providers enforce robust patch‑management and have rapid remediation SLAs for EoP bugs.
- Conduct privileged‑access reviews and harden identity configurations (least‑privilege, MFA, conditional access).
Technical Notes — The surge is driven by elevation‑of‑privilege vulnerabilities (CVE‑type: CVE‑2025‑xxxx) and a 73 % rise in information‑disclosure flaws. Exploits can be leveraged via legitimate credentials, “Living‑off‑the‑Land” scripts, or mis‑configured Azure AD objects. Source: BleepingComputer