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Microsoft has released September 2026 V2 security updates to fix an Exchange Server flaw that lets authenticated attackers access other users’ mailboxes within the same organization.
Summary
Tracked as CVE-2026–96940, the vulnerability could expose email messages and attachments, making it a serious concern for businesses running Exchange on-premises.
This is a brief wire summary, the full story (linked below) has the complete details.
KazaSec's take
Incidents like this rarely start with the headline event itself, they usually trace back to an exposed remote-access endpoint, an unpatched perimeter system, or a credential phished weeks earlier. The organizations that recover fastest are the ones that tested their defenses and their incident response plan before they needed them.
Coverage details
We've archived 119 other articles touching the same topic (vulnerability, cyber security news, cyber security) , see the full security news archive.
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