CVE-2026-63520

HIGH 1 PoC

MEDIUM Priority: 0.08 BB Relevance: 76/100

Published: 2026-08-11 Modified: 2026-10-28 First seen: 2026-10-29 Status: active

Network No Auth No Interaction Conf. Impact Integ. Impact

AV: Network

AC: High

PR: None

UI: None

S: Unchanged

C: High

I: High

A: High

Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.

Vendor	Product	Version
Microsoft	Microsoft SharePoint Enterprise Server 2016	16.0.0 < 16.0.5565.1001
Microsoft	Microsoft SharePoint Enterprise Server 2016	16.0.0 < 16.0.5565.1001
Microsoft	Microsoft SharePoint Server 2019	16.0.0 < 16.0.10417.20198
Microsoft	Microsoft SharePoint Server 2019	16.0.0 < 16.0.10417.20198
Microsoft	Microsoft SharePoint Server Subscription Edition	16.0.0 < 16.0.19725.20522
Microsoft	Microsoft SharePoint Server Subscription Edition	16.0.0 < 16.0.19725.20522
microsoft	sharepoint_server	< 16.0.19725.20522
microsoft	sharepoint_server	2016
microsoft	sharepoint_server	2019

vendor-advisory patch

★ 1

nomi-sec

76 / 100

✓ Network accessible
✓ No authentication
✓ No user interaction
✓ PoC available (1)

8.1 / 10.0 v3.1

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

0.96%

Raw Score 0.009560

Percentile 61.3%

Date 2026-10-28

mitre ref →