TI-2018-05921 Aliases CVE-2018-8176 GHSA-j39f-3w23-66c2

Improper input validation in Microsoft Office

MEDIUM 58CWE-20Published 2018-05-23 · Updated 2024-08-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA.

Summary

A remote code execution vulnerability exists in Microsoft PowerPoint software when the software fails to properly validate XML content, aka "Microsoft PowerPoint Remote Code Execution Vulnerability." This affects Microsoft Office.

Why it matters now

EPSS 0.23221 97th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Microsoft	Microsoft Office	2016 for Mac	—	No fix listed	CNA

Microsoft Office VendorMicrosoft Affected 2016 for Mac Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:microsoft:office_for_mac:2016:::::::*	2016	Vulnerable	Microsoft

cpe:2.3:a:microsoft:office_for_mac:2016:*:*:*:*:*:*:* Versions 2016 Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2018-8176
2026-10-03 Alias added: GHSA-j39f-3w23-66c2

References

Patch 1

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8176

TI-2018-06028 A remote code execution vulnerability exists when the Windows font library improperly… CVSS 3.0HIGH 8.8
TI-2018-05907 A remote code execution vulnerability exists in Microsoft Excel software when the… CVSS 3.0HIGH 7.8
TI-2018-05893 A remote code execution vulnerability exists in Microsoft Excel software when the… CVSS 3.0HIGH 7.8
TI-2018-05892 A remote code execution vulnerability exists in Microsoft Excel software when the… CVSS 3.0HIGH 7.8
TI-2017-08773 Memory corruption in Microsoft Office 2016, Microsoft Office 2016 for Mac CVSS 3.0HIGH 7.8
TI-2016-06263 Microsoft Office 2007 SP3, Office 2010 SP2, Office 2013 SP1, Office for Mac 2011, and… CVSS 3.0HIGH 7.1

See all 9 →

Sources

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