Microsoft security advisory (AV26-1001)
Cybersecurity Classified by Officially
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 administrators to review the provided web links and apply any necessary updates as they become available.
This is an extract. The publication continues at the source.
Source: Canadian Centre for Cyber Security. Licence
Read the original at the source: https://cyber.gc.ca/en/alerts-advisories/microsoft-security-advisory-av26-1001
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Provenance
- Organization
- Canadian Centre for Cyber Security — imported from official source
- Official source
- https://www.cyber.gc.ca/api/cccs/rss/v1/get?feed=alerts_advisories&lang=en ATOM
- Imported
- October 05, 2026 19:00
- Versions
- 1 recorded
- Identity
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https://cyber.gc.ca/en/alerts-advisories/microsoft-security-advisory-av26-1001