SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2023-21677

Windows Internet Key Exchange (IKE) Extension Denial of Service Vulnerability

HIGH 7.5EPSS 1.98%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.98%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Windows Internet Key Exchange (IKE) Extension 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
1.98% probability · 79th percentile
CISA KEV
Not listed
Weakness
CWE-822
Affected
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 11 22h2 · 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.