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Microsoft released 22 security updates for cloud and enterprise products, including multiple critical vulnerabilities with CVSS scores of 10.0 affecting Azure SQL Database, Exchange Online, Azure Arc, Azure Managed Instance for Apache Cassandra, and Entra ID. The updates also addressed seven additional critical elevation-of-privilege flaws in Azure SQL Database, Microsoft Fabric, Entra ID, Azure Logic Apps, and Azure Data Factory. Microsoft said most of the issues were mitigated server-side, reducing or eliminating required customer action.
One of the most severe issues, CVE-2026-65801, is an unauthenticated server-side request forgery flaw in Exchange Online that can lead to unauthorized privilege escalation over the network. The vulnerability affects only the cloud-hosted service and not on-premises Exchange Server, and Microsoft has already deployed mitigations without requiring customer patching. Public reporting cited no confirmed active exploitation or public proof-of-concept at the time of disclosure, but organizations were urged to review Microsoft 365 security and audit telemetry for suspicious authentication, authorization, or administrative activity.
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3 events from the most recent confirmed update back to the earliest known activity.
Microsoft submitted the CVE record for CVE-2026-69502, a server-side request forgery vulnerability in Azure SQL Database that could allow an unauthorized network attacker to elevate privileges. The record classified the issue as CWE-918 and marked Azure SQL Database as an exclusively hosted service.
Microsoft announced 22 new security updates addressing severe vulnerabilities across Azure, Entra ID, Exchange Online, Fabric, Partner Center, and other products. The release included multiple CVSS 10.0 flaws, and Microsoft said most issues required no customer action because mitigations were deployed server-side.
Microsoft's CNA published the CVE record for CVE-2026-65801, a critical SSRF vulnerability in Exchange Online that can enable unauthorized privilege escalation by an unauthenticated remote attacker. Microsoft also published security guidance for the cloud service the same day.
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Microsoft disclosed and patched **CVE-2021-31196**, a remote code execution vulnerability in **Microsoft Exchange Server**. The company rated the flaw **Important** and assigned it a **CVSS 3.0 score of 7.2**, with the vector `AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`, indicating the issue is reachable over the network, requires no user interaction, and could lead to high impact across confidentiality, integrity, and availability if successfully exploited. Microsoft said the vulnerability required **high privileges**, assessed exploitation as **less likely**, and reported that exploit code was **unproven** and that the flaw was **not publicly disclosed or actively exploited** at the time of publication. An official security update was made available through the Microsoft Security Response Center, and Microsoft credited **Orange Tsai of DEVCORE** with reporting the issue.
Jun 29, 2026
Microsoft disclosed multiple vulnerabilities in on-premises **Exchange Server**, including **CVE-2021-31207** (security feature bypass), **CVE-2021-31209** (spoofing), and **CVE-2022-41040** (elevation of privilege). The issues affected Exchange deployments rather than **Exchange Online**, extending a pattern of high-impact weaknesses in the mail platform that could undermine trust boundaries, enable impersonation, and weaken built-in protections. Among them, **CVE-2022-41040** was rated **Critical** with a **CVSS 3.1 score of 8.8**, and Microsoft said exploitation had been detected in the wild before public disclosure. The flaw required an authenticated attacker with low privileges and no user interaction, and successful exploitation could allow the attacker to run **PowerShell** as **`SYSTEM`**. Microsoft later released security updates and directed Exchange Server customers to apply mitigations and patches for the reported zero-day issues.
Jun 29, 2026
Microsoft has disclosed multiple **elevation of privilege** vulnerabilities affecting **Microsoft Exchange Server**, including `CVE-2021-34470`, `CVE-2021-41348`, `CVE-2022-41123`, and `CVE-2025-64666`, indicating a recurring security issue in the on-premises mail platform across several release cycles. The advisories show Exchange continued to receive fixes for privilege-escalation weaknesses over multiple years, with Microsoft publishing separate Security Update Guide entries as new flaws were identified. Among the listed issues, Microsoft provided the most detail for `CVE-2021-34470`, rating it **Important** with a **CVSS 3.0 score of 8.0** and describing it as requiring access from a logically adjacent network. Microsoft said the flaw required a **schema change** and was fixed for **Exchange Server 2019** and **Exchange Server 2016** in cumulative updates released on June 29, 2021; at initial publication, the company said it was **not publicly disclosed**, **not exploited**, and **less likely to be exploited**. A separate Microsoft advisory in the same reference set, `CVE-2026-26128`, affects the **Windows SMB Server** rather than Exchange and also involves elevation of privilege.
Jun 29, 2026