CVE-2023-36039

Name: CVE-2023-36039
Creator: NVD / NIST
Published: 2023-11-14T18:15:33.72+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8/10EPSS 72.99%

Last modified Jun 17, 2026

CVE-2023-36039 is a high-severity vulnerability rated 8/10 on the CVSS scale. Microsoft Exchange Server Spoofing Vulnerability. EPSS estimates a 72.99% chance of exploitation in the next 30 days.

Description

Microsoft Exchange Server Spoofing Vulnerability

Metrics

CVSS 3.1

8/10

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

EPSS Probability

72.99%

99.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-502

Affected Software

Vendor	Product	Versions	Update
Microsoft	Exchange Server	2016	Cumulative Update 23
Microsoft	Exchange Server	2019	Cumulative Update 12

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36039Patch, Vendor Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36039Patch, Vendor Advisory

Timeline

Published: Nov 14, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-36039?

Microsoft Exchange Server Spoofing Vulnerability

How severe is CVE-2023-36039?

CVE-2023-36039 has a CVSS score of 8/10 (HIGH severity). The EPSS model estimates a 72.99% probability of exploitation in the next 30 days.

How do I fix CVE-2023-36039?

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-2023-36039?

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

Scan your code now

Source: NVD / NIST