CVE-2023-23396

Name: CVE-2023-23396
Creator: NVD / NIST
Published: 2023-03-14T17:15:13.177+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 3.83%

Last modified Jun 17, 2026

CVE-2023-23396 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Microsoft Excel Denial of Service Vulnerability. EPSS estimates a 3.83% chance of exploitation in the next 30 days.

Description

Microsoft Excel Denial of Service Vulnerability

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

3.83%

88.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Microsoft	Office Online Server	All versions	—
Microsoft	Office Web Apps Server	2013	Sp1

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-23396Patch, Vendor Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-23396Patch, Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2023-23396?

Microsoft Excel Denial of Service Vulnerability

How severe is CVE-2023-23396?

CVE-2023-23396 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 3.83% probability of exploitation in the next 30 days.

How do I fix CVE-2023-23396?

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-2023-23396?

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

Scan your code now

Source: NVD / NIST