CVE-2025-25007

Name: CVE-2025-25007
Creator: NVD / NIST
Published: 2025-08-12T18:15:27.987+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.80%

Last modified Jun 17, 2026

CVE-2025-25007 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Improper validation of syntactic correctness of input in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.. EPSS estimates a 0.80% chance of exploitation in the next 30 days.

Description

Improper validation of syntactic correctness of input in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.80%

51.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1286

Affected Software

Vendor	Product	Versions
Microsoft	Exchange Server	2016
Microsoft	Exchange Server	2019
Microsoft	Exchange Server Subscription Edition	< 15.02.2562.020

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-25007Vendor Advisory

Timeline

Published: Aug 12, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-25007?

Improper validation of syntactic correctness of input in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.

How severe is CVE-2025-25007?

CVE-2025-25007 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.80% probability of exploitation in the next 30 days.

How do I fix CVE-2025-25007?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-25007?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST