CVE-2023-36435

Name: CVE-2023-36435
Creator: NVD / NIST
Published: 2023-10-10T18:15:12.68+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 5.47%

Last modified Jun 17, 2026

CVE-2023-36435 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Microsoft QUIC Denial of Service Vulnerability. EPSS estimates a 5.47% chance of exploitation in the next 30 days.

Description

Microsoft QUIC Denial of Service Vulnerability

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

5.47%

91.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-400

Affected Software

Vendor	Product	Versions
Microsoft	.Net	>= 7.0.0, <= 7.0.12
Microsoft	Windows 11 21h2	< 10.0.22000.2538
Microsoft	Windows 11 22h2	< 10.0.22621.2428
Microsoft	Windows Server 2022	All versions

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36435Patch, Vendor Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36435Patch, Vendor Advisory

Timeline

Published: Oct 10, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-36435?

Microsoft QUIC Denial of Service Vulnerability

How severe is CVE-2023-36435?

CVE-2023-36435 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 5.47% probability of exploitation in the next 30 days.

How do I fix CVE-2023-36435?

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-2023-36435?

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

Scan your code now

Source: NVD / NIST