VDB
CVE-2026-55006
CVE-2026-55006
PUBLISHED
CVSS 7.8 HIGH
Reported by microsoft · Published July 14, 2026
Insufficient granularity of access control in Microsoft Exchange Server allows an authorized attacker to elevate privileges locally.
Risk Scores
CVSS 3.1
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 23 | 15.01.0.0 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 14 | 15.02.0.0 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 15 | 15.02.0.0 |
| Microsoft | Microsoft Exchange Server Subscription Edition RTM | 15.02.0.0 |
| microsoft | exchange_server_2019 | 15.02.0.0, 15.02.0.0, 15.02.0.0 |
| microsoft | exchange_server_2016 | 15.01.0.0, 15.01.0.0, 15.01.0.0 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 14 | 15.02.0.0, 15.02.0.0, 15.02.0.0 |
| Microsoft | Microsoft Exchange Server Subscription Edition RTM | 15.02.0.0, 15.02.0.0, 15.02.0.0 |
| microsoft | exchange_server_se | 15.02.0.0, 15.02.0.0, 15.02.0.0 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 15 | 15.02.0.0, 15.02.0.0, 15.02.0.0 |
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 23 | 15.01.0.0, 15.01.0.0, 15.01.0.0 |
Timeline
- Jul 14, 2026 CVE Published
- Jul 15, 2026 Coalition ESS Score
- Jul 24, 2026 CVE Updated
- Aug 7, 2026 EPSS Score
- Aug 8, 2026 Security Advisory
References
- Microsoft Exchange Server Elevation of Privilege Vulnerability vendor-advisorypatch