Advisoriesby IbisMicrosoftCVE-2026-96940
Microsoft Exchange Server: privilege escalation
Fix: upgrade to 15.01.2507.075 or later (4 fixed versions below)
Weak authorization in Microsoft Exchange Server allows an authenticated attacker to elevate privileges over a network.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Microsoft Exchange Server 2016 Cumulative Update 23 Product | >= 15.01.0.0, < 15.01.2507.075 | 15.01.2507.075 |
| Microsoft Exchange Server 2019 Cumulative Update 14 Product | >= 15.02.0.0, < 15.02.1544.048 | 15.02.1544.048 |
| Microsoft Exchange Server 2019 Cumulative Update 15 Product | >= 15.02.0.0, < 15.02.1748.053 | 15.02.1748.053 |
| Microsoft Exchange Server Subscription Edition RTM Product | >= 15.02.0.0, < 15.02.2562.053 | 15.02.2562.053 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-1390
More Microsoft advisories
All Microsoft| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Sep 25 | Microsoft Office Outlook: integer overflow | High7.5 | See the advisory |
| Sep 23 | Microsoft 365 Apps for Enterprise: remote code execution | High8.8 | See the advisory |
| Sep 18 | Microsoft Edge (Chromium-based): use after free | High8.1 | 153.0.4234.46 |
| Sep 18 | Microsoft Azure HorizonDB: improper authorization | Critical9.9 | No fix yet |
| Sep 18 | Microsoft 365 Copilot: insecure permissions | High7.7 | No fix yet |
| Sep 18 | Microsoft Azure Portal: cross-site scripting | High8.2 | No fix yet |