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CVE-2026-45501 Details

Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to perform spoofing over a network.

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.1 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CNA: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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URL	Source(s)	Tag(s)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45501	[email protected]	Vendor Advisory

CWE-ID	CWE Name	Source
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	[email protected]
CWE-918	Server-Side Request Forgery (SSRF)	[email protected]

Product	Versions
microsoft exchange server	2016 cumulative_update_23 2019 cumulative_update_14 2019 cumulative_update_15
CPE cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_23:::::: cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_14:::::: cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_15:::::: Remediation No remediation found in references.
microsoft exchange server subscription edition	< 15.02.2562.043
CPE cpe:2.3:a:microsoft:exchange_server_subscription_edition:::::::: Remediation No remediation found in references.

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