What is the CVSS score of CVE-2025-25005?

CVE-2025-25005 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N. EPSS exploitation probability: 0.3%.

Which versions of Exchange Server are affected by CVE-2025-25005?

Organizations using Improper input validation in Microsoft Exchange Server should be aware of notable risk from CVE-2025-25005, a input validation vulnerability rated CVSS 6.5.

How to fix or mitigate CVE-2025-25005?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Exchange Server CVE-2025-25005

MEDIUM

Improper Input Validation (CWE-20)

2025-08-12 secure@microsoft.com

Microsoft Information Disclosure Exchange Server

6.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.5 MEDIUM

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:06 vuln.today

CVE Published

Aug 12, 2025 - 18:15 nvd

MEDIUM 6.5

DescriptionNVD

Improper input validation in Microsoft Exchange Server allows an authorized attacker to perform tampering over a network.

AnalysisAI

Improper input validation in Microsoft Exchange Server allows an authorized attacker to perform tampering over a network. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-20. Improper input validation in Microsoft Exchange Server allows an authorized attacker to perform tampering over a network. Affected products include: Microsoft Exchange Server.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.