CVE-2025-53786
8.0 · HIGHOverview
CVE-2025-53786 is a high-severity vulnerability affecting microsoft exchange_server. It was published on August 6, 2025 and has a CVSS 3.1 base score of 8.0 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.0, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
On April 18th 2025, Microsoft announced Exchange Server Security Changes for Hybrid Deployments and accompanying non-security Hot Fix. Microsoft made these changes in the general interest of improving the security of hybrid Exchange deployments. Following further investigation, Microsoft identified specific security implications tied to the guidance and configuration steps outlined in the April announcement. Microsoft is issuing CVE-2025-53786 to document a vulnerability that is addressed by taking the steps documented with the April 18th announcement. Microsoft strongly recommends reading the information, installing the April 2025 (or later) Hot Fix and implementing the changes in your Exchange Server and hybrid environment.
Remediation
Check the references section for vendor advisories and patches from microsoft. Update exchange_server to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| microsoft | exchange_server_subscription_edition | >= 0, < 15.02.2562.017 | Affected |
Frequently Asked Questions
What is CVE-2025-53786?
CVE-2025-53786 is a high-severity vulnerability affecting microsoft exchange_server. It was published on August 6, 2025 and has a CVSS 3.1 base score of 8.0 (HIGH).
How severe is CVE-2025-53786?
This vulnerability has a CVSS 3.1 base score of 8.0, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2025-53786?
Check the references section for vendor advisories and patches from microsoft. Update exchange_server to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-53786?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-53786 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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