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TI-2017-08850 Aliases CVE-2017-11932GHSA-fg2h-gf84-hw5h

Improper input validation in Microsoft Exchange Server

Priority MEDIUM 44CWE-20Published · Updated

Key facts

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

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

Summary

Microsoft Exchange Server 2016 CU5 and Microsoft Exchange Server 2016 CU5 allow a spoofing vulnerability due to the way Outlook Web Access (OWA) validates web requests, aka "Microsoft Exchange Spoofing Vulnerability".

Why it matters now

EPSS 0.05884 93rd 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

VendorProductAffected versionsFixed inStatusSource
MicrosoftMicrosoft Exchange ServerMicrosoft Exchange Server 2016 CU5 and Microsoft Exchange Server 2016 CU5—No fix listedCNA
  • Microsoft Exchange Server VendorMicrosoft Affected Microsoft Exchange Server 2016 CU5 and Microsoft Exchange Server 2016 CU5 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_6:*:*:*:*:*:*2016 cumulative_update_6VulnerableMicrosoft
cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_7:*:*:*:*:*:*2016 cumulative_update_7VulnerableMicrosoft
  • cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_6:*:*:*:*:*:* Versions 2016 cumulative_update_6 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_7:*:*:*:*:*:* Versions 2016 cumulative_update_7 Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-11932
  2. 2026-10-03 Alias added: GHSA-fg2h-gf84-hw5h

References

Patch 1

  • 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