TI-2026-73193 Aliases CVE-2026-97781 GHSA-g8p2-qfh9-mhqc

Command injection in Microsoft Office OneNote enables code execution

MEDIUM 42CWE-77Published 2026-10-13 · Updated 2026-10-31

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-77.

Summary

Microsoft 365 Apps for Enterprise from version 16.0.1 is affected by a command injection flaw in Microsoft Office OneNote (CWE-77). The flaw comes from improper neutralization of special elements used in a command, which lets an unauthorized remote attacker execute code. Exploitation requires user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Improper neutralization of special elements used in a command ('command injection') in Microsoft Office OneNote allows an unauthorized attacker to execute code over a network.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0088 59th percentileScored 2026-11-07

Fix Fixed Microsoft 365 Apps for Enterprise (Microsoft): https://aka.ms/OfficeSecurityReleases

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 365 Apps for Enterprise	16.0.1 to before https://aka.ms/OfficeSecurityReleases	https://aka.ms/OfficeSecurityReleases	Patch available	CNA

Microsoft 365 Apps for Enterprise VendorMicrosoft Affected 16.0.1 to before https://aka.ms/OfficeSecurityReleases Fixed in https://aka.ms/OfficeSecurityReleases Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:microsoft:365_apps:-::::enterprise:::	not specified by NVD	Vulnerable	Microsoft

cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:*:* Versions not specified by NVD Vulnerable ·Microsoft

Remediation

The sources list no fixed version number for Microsoft 365 Apps for Enterprise. Microsoft's Office security releases page lists the fix.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Fix · CNA Microsoft 365 Apps for Enterprise (Microsoft) Fixed in https://aka.ms/OfficeSecurityReleases

Timeline

2026-10-13 Threatist record created from CVE-2026-97781
2026-10-13 Alias added: GHSA-g8p2-qfh9-mhqc
2026-10-16 CISA SSVC decision points changed

References

Patch 1

Microsoft Office OneNote Remote Code Execution Vulnerability

TI-2024-14173 Microsoft Outlook Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2023-09240 Microsoft Outlook Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2024-25471 Microsoft Project Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 8.8
TI-2023-17652 Microsoft Outlook Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
TI-2026-17368 Microsoft Word Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 7.8
TI-2026-17363 Microsoft Office Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 7.8

See all 935 →

Sources

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