CVE-2026-55040

EUVD-2026-44211
Weak authentication in Microsoft Office SharePoint allows an unauthorized attacker to bypass a security feature over a network.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.1 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 92.28%
Affected Products (NVD)
VendorProductVersion
microsoftsharepoint_server
𝑥
< 16.0.19725.20434
𝑥
= Vulnerable software versions
Vulnerability Media Exposure