by Kastro
Paper/Archive/CVE-2026-70306

CVE-2026-70306

Microsoft Microsoft SharePoint Enterprise Server 2016 — Microsoft Office SharePoint Spoofing Vulnerability

EPSS 1%CVSS 9.3
critical.is priorityof 100
41
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 63.0.630 × 2012.6No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

Affected

ProductAffectedFixed inSource
Microsoft SharePoint Enterprise Server 201616.0.0 – < 16.0.5565.100116.0.5565.1001CNA
Microsoft SharePoint Server 201916.0.0 – < 16.0.10417.2019816.0.10417.20198CNA
Microsoft SharePoint Server Subscription Edition16.0.0 – < 16.0.19725.2052216.0.19725.20522CNA

Scores by source

microsoft (CNA)9.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

patchmsrc.microsoft.com/update-guide/vulnerability/CVE-2026-70306