TI-2018-05898 Aliases CVE-2018-8153 GHSA-w3vw-mgpx-6mjp

Authentication bypass by spoofing in Microsoft Exchange Server

LOW 31CWE-290Published 2018-05-09 · Updated 2024-08-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Security bypass
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-290.

Summary

A spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web Access (OWA) fails to properly handle web requests, aka "Microsoft Exchange Spoofing Vulnerability." This affects Microsoft Exchange Server.

Why it matters now

EPSS 0.03444 89th 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 Exchange Server	2016 Cumulative Update 8; 2016 Cumulative Update 9	—	No fix listed	CNA

Microsoft Exchange Server VendorMicrosoft Affected 2016 Cumulative Update 8; 2016 Cumulative Update 9 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_8::::::	2016 cumulative_update_8	Vulnerable	Microsoft
cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_9::::::	2016 cumulative_update_9	Vulnerable	Microsoft

cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_8:*:*:*:*:*:* Versions 2016 cumulative_update_8 Vulnerable ·Microsoft
cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_9:*:*:*:*:*:* Versions 2016 cumulative_update_9 Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2018-8153
2026-10-03 Alias added: GHSA-w3vw-mgpx-6mjp

References

Patch 1

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8153

TI-2024-14170 Microsoft Exchange Server Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2022-19610 Microsoft Exchange Server Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2021-13547 Microsoft Exchange Server Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2021-13502 Microsoft Exchange Server Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2021-08465 Microsoft Exchange Server Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2023-07929 Microsoft Exchange Server Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 8.8

See all 258 →

Sources

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