CVE-2026-87696 Microsoft Exchange Server Elevation of Privilege Vulnerability
HighCVSS 7.5
EPSS 0.42%
- Published
- Updated
- Exploit status
- No public exploit known
Description
Improper verification of cryptographic signature in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Microsoft Exchange Server 2016 Cumulative Update 23 | >= 15.01.0.0, < 15.01.2507.077 | 15.01.2507.077 |
| Microsoft Exchange Server 2019 Cumulative Update 14 | >= 15.02.0.0, < 15.02.1544.050 | 15.02.1544.050 |
| Microsoft Exchange Server 2019 Cumulative Update 15 | >= 15.02.0.0, < 15.02.1748.055 | 15.02.1748.055 |
| Microsoft Exchange Server Subscription Edition RTM | >= 15.02.0.0, < 15.02.2562.056 | 15.02.2562.056 |
| Microsoft exchange server | = 2016-cumulative_update_23 | No fix listed |
| Microsoft exchange server | = 2019-cumulative_update_14 | No fix listed |
| Microsoft exchange server | = 2019-cumulative_update_15 | No fix listed |
| Microsoft exchange server subscription edition | < 15.02.2562.056 | 15.02.2562.056 |
| Microsoft exchange server 2019 | < 15.02.1748.055 | 15.02.1748.055 |
| Microsoft exchange server se | < 15.02.2562.056 | 15.02.2562.056 |
| Microsoft exchange server 2019 | < 15.02.1544.050 | 15.02.1544.050 |
| Microsoft exchange server 2016 | < 15.01.2507.077 | 15.01.2507.077 |