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CVE-2025-25006

Microsoft Exchange Server Spoofing Vulnerability

Published: Aug 12, 2025Updated: Jun 15, 2026 Sources: CVE List NVD BDUCWE-167
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.8%
Top 48.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Improper handling of additional special element in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-167NVD-CWE-Other

Affected Products

Microsoft Exchange ServerMicrosoft Corp
On-prem
Operating Systems
exchange servermicrosoft
On-prem
Operating Systems / windows
exchange server subscription editionmicrosoft
On-premWeb App
Enterprise Software / itsm-monitoring
Microsoft Exchange Server 2016 Cumulative Update 23Microsoft
On-prem
Operating Systems
Microsoft Exchange Server 2019 Cumulative Update 14Microsoft
On-prem
Operating Systems / windows
microsoft corpcommercialUSOperating Systemsaka microsoft corporation
microsoftcommercialUSOperating Systems
and 2 more affected products View all →

Exploitability

Official Patch Available

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-25006
msrc.microsoft.com

Timeline

Published
Aug 12, 2025
Last Updated
Jun 15, 2026

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