Active exploitation of vulnerability affecting Microsoft Office SharePoint Server products in the UK

News Cybersecurity Guidance

Date: 21st Jul, 2025 Source: National Cyber Security Centre (NCSC) Country: United Kingdom Original Source

Brief

On 21/07/2025, the National Cyber Security Centre (NCSC) issued an update regarding Active exploitation of vulnerability affecting Microsoft Office SharePoint Server products in the UK. This exploit affects on-premises SharePoint Server instances and allows attackers to remotely execute arbitrary code via deserialisation of untrusted data.

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National Cyber Security Centre (NCSC)

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Active exploitation of vulnerability affecting Microsoft Office SharePoint Server products in the UK

Brief

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Active exploitation of vulnerability affecting Microsoft Office SharePoint Server products in the UK

Brief

National Cyber Security Centre (NCSC)

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