Ref# ADV2026_193 | Date: Mar 30th 2026

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Microsoft published a security update highlighting a vulnerability in the following product on March 26, 2026. It is recommended that you take the necessary precautions by ensuring your product is always updated. 

• Microsoft Edge Stable Channel – versions prior to 146.0.3856.84 

 

For more information on this update, you can follow this URL: 

• Microsoft Edge Stable Channel Release Notes 

 

The Guyana National CIRT recommends that users and administrators review this update and apply it where necessary. 

PDF Download: Microsoft Edge Security Advisory

References 

• Microsoft Edge Stable Channel Release Notes. (n.b.). Retrieved from Microsoft Edge. https://learn.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security#march-26-2026 

 

• Microsoft Edge security advisory. (March 26, 2026). Retrieved from Canadian Centre for Cyber Security. https://www.cyber.gc.ca/en/alerts-advisories/microsoft-edge-security-advisory-av26-293