CVE-2026-45484: high-severity vulnerability in Microsoft SharePoint Enterprise Server 2016
Microsoft SharePoint Elevation of Privilege Vulnerability
Published · Updated
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 2.3%
exploitation probability
2.3%top 17% of all CVEs
observed exploitation
nono source reports it
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
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
Affected products
Microsoft · Microsoft SharePoint Enterprise Server 2016Microsoft · Microsoft SharePoint Server 2019Microsoft · Microsoft SharePoint Server Subscription EditionRelated CVEs — Microsoft SharePoint Enterprise Server 2016
In the same product, most dangerous first.
CVE-2025-53770CRITICALMicrosoft SharePoint Server Remote Code Execution VulnerabilityEPSS 100.0%KEVCVE-2025-49704HIGHMicrosoft SharePoint Remote Code Execution VulnerabilityEPSS 100.0%KEVCVE-2023-29357CRITICALMicrosoft SharePoint Server Elevation of Privilege VulnerabilityEPSS 100.0%KEVCVE-2025-49706MEDIUMMicrosoft SharePoint Server Spoofing VulnerabilityEPSS 99.1%KEVCVE-2023-24955HIGHMicrosoft SharePoint Server Remote Code Execution VulnerabilityEPSS 85.0%KEVCVE-2026-55040CRITICALMicrosoft SharePoint Server Security Feature Bypass VulnerabilityEPSS 69.5%KEV