TI-2018-05964 Aliases CVE-2018-8247 GHSA-9635-5wrr-hhvf

Cross-site scripting in Microsoft Office

LOW 31CWE-79Published 2018-06-14 · Updated 2024-08-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

An elevation of privilege vulnerability exists when Office Web Apps Server 2013 and Office Online Server fail to properly handle web requests, aka "Microsoft Office Elevation of Privilege Vulnerability." This affects Microsoft Office, Microsoft Office Online Server. This CVE ID is unique from CVE-2018-8245.

Why it matters now

EPSS 0.03857 90th 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	Web Apps Server 2013 Service Pack 1	—	No fix listed	CNA
Microsoft	Microsoft Office Online Server	2016	—	No fix listed	CNA

Microsoft Office VendorMicrosoft Affected Web Apps Server 2013 Service Pack 1 Fixed in — No fix listed CNA
Microsoft Office Online Server VendorMicrosoft Affected 2016 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:microsoft:office_online_server:2016:::::::*	2016	Vulnerable	Microsoft
cpe:2.3:a:microsoft:office_web_apps:2013:sp1::::::	2013 sp1	Vulnerable	Microsoft

cpe:2.3:a:microsoft:office_online_server:2016:*:*:*:*:*:*:* Versions 2016 Vulnerable ·Microsoft
cpe:2.3:a:microsoft:office_web_apps:2013:sp1:*:*:*:*:*:* Versions 2013 sp1 Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2018-8247
2026-10-03 Alias added: GHSA-9635-5wrr-hhvf
2026-10-30 EPSS moved to the 90th–95th percentile

References

Patch 1

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8247

TI-2017-08774 Memory corruption in Microsoft Office KEVCVSS 3.1HIGH 7.8
TI-2023-08100 Microsoft Word Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
TI-2021-13528 Microsoft Excel Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8
TI-2023-15335 Microsoft Excel Remote Code Execution Vulnerability CVSS 3.1HIGH 7.8
TI-2023-16312 Microsoft Excel Remote Code Execution Vulnerability CVSS 3.1HIGH 7.8
TI-2018-00733 Out-of-bounds write in Microsoft Word CVSS 3.0HIGH 8.8

See all 280 →

Sources

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