CVE-2026-96940— Microsoft Exchange Server Elevation of Privilege Vulnerability
Quick assessment
Affected
Microsoft Microsoft Exchange Server 2016 Cumulative Update 23
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Microsoft Exchange Server 中存在弱授权漏洞，允许经过身份验证的攻击者通过网络提升权限。
Affected Version Matrix 4
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 23 | 15.01.0.0< 15.01.2507.075 |
affected |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 14 | 15.02.0.0< 15.02.1544.048 |
affected |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 15 | 15.02.0.0< 15.02.1748.053 |
affected |
| Microsoft | Microsoft Exchange Server Subscription Edition RTM | 15.02.0.0< 15.02.2562.053 |
affected |
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I. Basic Information for CVE-2026-96940
Vulnerability Information
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Vulnerability Title
Microsoft Exchange Server Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Weak authorization in Microsoft Exchange Server allows an authenticated attacker to elevate privileges over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1390
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 23 | 15.01.0.0 ~ 15.01.2507.075 | - |
|
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 14 | 15.02.0.0 ~ 15.02.1544.048 | - |
|
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 15 | 15.02.0.0 ~ 15.02.1748.053 | - |
|
| Microsoft | Microsoft Exchange Server Subscription Edition RTM | 15.02.0.0 ~ 15.02.2562.053 | - |
|
II. Public POCs for CVE-2026-96940
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-96940 (1)
IV. Related Vulnerabilities
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V. Comments for CVE-2026-96940
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