TI-2026-73194 Aliases CVE-2026-97782 GHSA-5p2p-hf6p-32hj

Observable discrepancy in Microsoft SharePoint allows tampering

LOW 33CWE-203Published 2026-10-13 · Updated 2026-10-31

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: High
Impact type: Information disclosure
Confidentiality · integrity · availability: High · High · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-203.

Summary

Microsoft SharePoint Server Subscription Edition from 16.0.0 before 16.0.19725.20522 contains an observable discrepancy flaw (CWE-203) that lets an authorized attacker tamper with data over a network. The attacker must have low privileges and the attack is high complexity. Successful exploitation can fully compromise integrity and confidentiality, but the flaw does not affect availability. No public exploit or known exploitation is reported.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Description from the CNA

Observable discrepancy in Microsoft Office SharePoint allows an authorized attacker to perform tampering over a network.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00531 45th percentileScored 2026-11-07

Fix Fixed Microsoft SharePoint Server Subscription Edition (Microsoft): 16.0.19725.20522

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Microsoft	Microsoft SharePoint Server Subscription Edition	16.0.0 to before 16.0.19725.20522	16.0.19725.20522	Patch available	CNA

Microsoft SharePoint Server Subscription Edition VendorMicrosoft Affected 16.0.0 to before 16.0.19725.20522 Fixed in 16.0.19725.20522 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:microsoft:sharepoint_server:-::::subscription:::	not specified by NVD	Vulnerable	Microsoft

cpe:2.3:a:microsoft:sharepoint_server:-:*:*:*:subscription:*:*:* Versions not specified by NVD Vulnerable ·Microsoft

Remediation

Microsoft SharePoint Server Subscription Edition should be updated to 16.0.19725.20522 or later.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Fix · CNA Microsoft SharePoint Server Subscription Edition (Microsoft) Fixed in 16.0.19725.20522

Timeline

2026-10-13 Threatist record created from CVE-2026-97782
2026-10-13 Alias added: GHSA-5p2p-hf6p-32hj
2026-10-30 Fix available: Microsoft/Microsoft SharePoint Server Subscription [email protected] · CNA

References

Patch 1

Microsoft Office SharePoint Tampering Vulnerability

TI-2026-42212 Microsoft SharePoint Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2026-37256 Microsoft SharePoint Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2026-16982 Microsoft SharePoint Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2025-33671 Microsoft SharePoint Server Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2023-13749 Microsoft SharePoint Server Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2019-00394 Improper input validation in Microsoft SharePoint Server KEVCVSS 3.1CRITICAL 9.8

See all 631 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences