Microsoft security advisory (AV26-1001)

Reported by Canadian Centre for Cyber Security

Summary by Cyber Security News5 Oct 2026, 20:53 CET

About this summary. This is a short excerpt from the description that Canadian Centre for Cyber Security published with its article. Cyber Security News did not report or verify the underlying story. Read the original: https://cyber.gc.ca/en/alerts-advisories/microsoft-security-advisory-av26-1001

Serial Number: AV26-1001 Date: October 5, 2026 As of October 2, 2026, Microsoft is affected by a vulnerability in the following products: Microsoft Exchange Server 2016 Cumulative Update 23 Prior to 15.01.2507.075 Microsoft Exchange Server 2019 Cumulative Update 14 Prior to 15.02.1544.048 Microsoft Exchange Server 2019 Cumulative Update 15 Prior to 15.02.1748.053 Microsoft Exchange Server Subscription Edition RTM Prior to 15.02.2562.053 The Cyber Centre encourages users and…

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Source attribution: headline and facts are from Canadian Centre for Cyber Security (cyber.gc.ca). Summary method: excerpt of the source description. See our source attribution policy.