SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2023-36884

Microsoft Windows Search Remote Code Execution Vulnerability

KEVHIGH 7.5EPSS 98.9%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 29 August 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

Windows Search Remote Code Execution Vulnerability

CVSS 3.1
7.5 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
98.93% probability · 100th percentile
CISA KEV
Listed 17 July 2023 · due 29 August 2023 · used in ransomware campaigns
Weakness
CWE-362
Affected
microsoft/windows 10 1507 · microsoft/windows 10 1607 · microsoft/windows 10 1809 · microsoft/windows 10 21h2 · microsoft/windows 10 22h2 · microsoft/windows 11 21h2 · microsoft/windows 11 22h2 · microsoft/windows server 2008 · microsoft/windows server 2012 · microsoft/windows server 2016 · microsoft/windows server 2019 · microsoft/windows server 2022
Source
secure@microsoft.com

CISA notes

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36884; https://nvd.nist.gov/vuln/detail/CVE-2023-36884

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