VDB
CVE-2026-45503
CVE-2026-45503
PUBLISHED
CVSS 8.1 HIGH
Reported by microsoft · Published June 9, 2026
Improper authorization in Microsoft Exchange Server allows an authorized attacker to disclose information over a network.
Risk Scores
CVSS 3.1
8.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/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_se | 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 | Microsoft Exchange Server 2019 Cumulative Update 15 | 15.02.0.0, 15.02.0.0, 15.02.0.0 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 14 | 15.02.0.0, 15.02.0.0, 15.02.0.0 |
| microsoft | exchange_server_2019 | 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 |
| microsoft | exchange_server_2016 | 15.01.0.0, 15.01.0.0, 15.01.0.0 |
Timeline
- Jun 9, 2026 CVE Published
- Jun 10, 2026 Coalition ESS Score
- Jun 10, 2026 Security Advisory
- Jul 9, 2026 CVE Updated
References
- Microsoft Exchange Server Information Disclosure Vulnerability vendor-advisorypatch