TI-2018-05974 Aliases CVE-2018-8265 GHSA-9g95-pgx7-jwh2

Improper input validation in Microsoft Exchange Server

MEDIUM 52CWE-20Published 2018-10-10 · Updated 2024-08-05

Key facts

Attack vector: Local
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 the way Microsoft Exchange software parses specially crafted email messages, aka "Microsoft Exchange Remote Code Execution Vulnerability." This affects Microsoft Exchange Server.

Why it matters now

EPSS 0.19268 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 Exchange Server	2013 Cumulative Update 21; 2016 Cumulative Update 10	—	No fix listed	CNA

Microsoft Exchange Server VendorMicrosoft Affected 2013 Cumulative Update 21; 2016 Cumulative Update 10 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_21::::::	2013 cumulative_update_21	Vulnerable	Microsoft
cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_10::::::	2016 cumulative_update_10	Vulnerable	Microsoft

cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_21:*:*:*:*:*:* Versions 2013 cumulative_update_21 Vulnerable ·Microsoft
cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_10:*:*:*:*:*:* Versions 2016 cumulative_update_10 Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2018-8265
2026-10-03 Alias added: GHSA-9g95-pgx7-jwh2

References

Patch 1

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8265

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