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Microsoft Security Response Center

CVE-2026-1220: Chromium: CVE-2026-1220 Race in V8

**What is the version information for this release?** Microsoft Edge Version Date Released Based on Chromium Version 144.0.3719.92 01/23/2026 144.0.7559.96/.97

Microsoft Security Response Center
#microsoft#chrome#Microsoft Edge (Chromium-based)#Security Vulnerability
CVE-2026-21264: Microsoft Account Spoofing Vulnerability

**Why are there no links to an update or instructions with steps that must be taken to protect from this vulnerability?** This vulnerability has already been fully mitigated by Microsoft. There is no action for users of this service to take. The purpose of this CVE is to provide further transparency. Please see Toward greater transparency: Unveiling Cloud Service CVEs for more information.

CVE-2026-21521: Word Copilot Information Disclosure Vulnerability

**Why are there no links to an update or instructions with steps that must be taken to protect from this vulnerability?** This vulnerability has already been fully mitigated by Microsoft. There is no action for users of this service to take. The purpose of this CVE is to provide further transparency. Please see Toward greater transparency: Unveiling Cloud Service CVEs for more information.

CVE-2026-21227: Azure Logic Apps Elevation of Privilege Vulnerability

**Why are there no links to an update or instructions with steps that must be taken to protect from this vulnerability?** This vulnerability has already been fully mitigated by Microsoft. There is no action for users of this service to take. The purpose of this CVE is to provide further transparency. Please see Toward greater transparency: Unveiling Cloud Service CVEs for more information.

CVE-2026-24307: M365 Copilot Information Disclosure Vulnerability

Improper validation of specified type of input in M365 Copilot allows an unauthorized attacker to disclose information over a network.

CVE-2026-24305: Azure Entra ID Elevation of Privilege Vulnerability

**Why are there no links to an update or instructions with steps that must be taken to protect from this vulnerability?** This vulnerability has already been fully mitigated by Microsoft. There is no action for users of this service to take. The purpose of this CVE is to provide further transparency. Please see Toward greater transparency: Unveiling Cloud Service CVEs for more information.

CVE-2026-21524: Azure Data Explorer Information Disclosure Vulnerability

**Why are there no links to an update or instructions with steps that must be taken to protect from this vulnerability?** This vulnerability has already been fully mitigated by Microsoft. There is no action for users of this service to take. The purpose of this CVE is to provide further transparency. Please see Toward greater transparency: Unveiling Cloud Service CVEs for more information.

CVE-2026-24306: Azure Front Door Elevation of Privilege Vulnerability

Improper access control in Azure Front Door (AFD) allows an unauthorized attacker to elevate privileges over a network.

CVE-2026-24304: Azure Resource Manager Elevation of Privilege Vulnerability

**Why are there no links to an update or instructions with steps that must be taken to protect from this vulnerability?** This vulnerability has already been fully mitigated by Microsoft. There is no action for users of this service to take. The purpose of this CVE is to provide further transparency. Please see Toward greater transparency: Unveiling Cloud Service CVEs for more information.

CVE-2026-21520: Copilot Studio Information Disclosure Vulnerability

**Why are there no links to an update or instructions with steps that must be taken to protect from this vulnerability?** This vulnerability has already been fully mitigated by Microsoft. There is no action for users of this service to take. The purpose of this CVE is to provide further transparency. Please see Toward greater transparency: Unveiling Cloud Service CVEs for more information.