CVE-2025-59249
Microsoft Exchange Server Elevation of Privilege Vulnerability
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
Weak authentication in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
| Vendor | microsoft |
| Product | microsoft exchange server 2016 cumulative update 23 |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Oct 14, 2025 |
| Last Updated | Feb 26, 2026 |
Stay Ahead of the Next One
Get instant alerts for microsoft microsoft exchange server 2016 cumulative update 23
Be the first to know when new high vulnerabilities affecting microsoft microsoft exchange server 2016 cumulative update 23 are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Microsoft / Microsoft Exchange Server 2016 Cumulative Update 23
15.01.0.0 < 15.01.2507.061
Microsoft / Microsoft Exchange Server 2019 Cumulative Update 14
15.02.0.0 < 15.02.1544.036
Microsoft / Microsoft Exchange Server 2019 Cumulative Update 15
15.02.0.0 < 15.02.1748.039
Microsoft / Microsoft Exchange Server Subscription Edition RTM
15.02.0.0 < 15.02.2562.029