SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2023-21818

Windows Secure Channel Denial of Service Vulnerability

HIGH 7.5EPSS 43.2%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 43.2%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

Description

Windows Secure Channel Denial of Service Vulnerability

CVSS 3.1
7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
43.17% probability · 99th percentile
CISA KEV
Not listed
Weakness
CWE-20
Affected
microsoft/windows 10 · microsoft/windows 10 1607 · microsoft/windows 10 1809 · microsoft/windows 10 20h2 · microsoft/windows 10 21h2 · microsoft/windows 10 22h2 · microsoft/windows 11 21h2 · microsoft/windows server 2008 · microsoft/windows server 2012 · microsoft/windows server 2016 · microsoft/windows server 2019 · microsoft/windows server 2022
Source
secure@microsoft.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.