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CVE-2026-45502: exchange server vulnerability
CVE-2026-45502: medium vulnerability affecting exchange server. Check CVSS, KEV status, business impact and recommended administrator actions.
- CVSS
- 5.0 MEDIUM
- EPSS
- 97.2%
- Known exploited
- not in KEV
- Product
- exchange server
What is known
Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to disclose information over a network.
Business impact
Successful exploitation of CVE-2026-45502, a medium vulnerability (CVSS 5.0) affecting exchange server, may affect the confidentiality, integrity or availability of the vulnerable environment. The exact impact depends on the installed version, exposed interfaces and deployment configuration.
Recommended administrator action
Confirm whether exchange server is present and compare installed versions with the vendor advisory and NVD record. Apply the vendor patch or documented mitigation; until remediation is complete, reduce exposure of affected interfaces, review relevant logs and monitor for indicators of exploitation. DataHouse can support version verification, managed patching, network exposure reduction, log review and backup validation for dedicated, cloud and colocated environments.