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CVE intelligence

CVE-2024-36347

Vulnerability intelligence

Published Jun 27, 2025Sources checked Oct 27, 2026
6.4MEDIUMCVSS out of 10
What this means

Review the available evidence

CVE-2024-36347 and is rated Medium severity with a CVSS score of 6.4. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Citrix Security Bulletins guidance

Vendor revision: May 3, 2026
Vendor remediation details

We have pushed updates to both the Early Access and Normal update channels of XenServer 8.4. We recommend that customers update to the latest version from their chosen channel following the instructions at https://docs.xenserver.com/en-us/xenserver/8/update. However, customers should note that the AMD microcode update provided is only effective on systems where the system firmware ("BIOS") has been updated to a version that includes a fix for CVE-2024-36347. This may be marked in the firmware release notes by reference to the firmware containing “AGESA PI 1.0.0.4” or later. Customers who are uncertain about their firmware version are recommended to contact their hardware vendor. What We Are Doing We are notifying customers and channel partners about this potential security issue through the publication of this security bulletin on the Citrix Knowledge Center at https://support.citrix.com/securitybulletins. Obtaining Support on This Issue If you require technical assistance with this issue, please contact Citrix Technical Support. Contact details for Citrix Technical Support are available at https://www.citrix.com/support. Subscribe to Receive Alerts We strongly recommend that all customers subscribe to receive alerts when a security bulletin is created or modified at https://support.citrix.com/user/alerts. Reporting Security Vulnerabilities to Us We welcome input regarding the security of our products and consider any and all potential vulnerabilities seriously. For details on our vulnerability response process and guidance on how to report security-related issues to us, please see the following webpage: https://www.citrix.com/about/trust-center/vulnerability-process.html. Change Log 2025-12-08 Initial Publication This document is provided on an "as is" basis and do

CISA KEVNot listedBased on the latest collected catalog
EPSS0.1%Estimated 30-day exploitation probability
Ransomware useNot markedCISA KEV ransomware field
Threat actors0Source-linked actor relationships
Overview

What is CVE-2024-36347?

Improper signature verification in AMD CPU ROM microcode patch loader may allow an attacker with local administrator privilege to load malicious microcode, potentially resulting in loss of integrity of x86 instruction execution, loss of confidentiality and integrity of data in x86 CPU privileged context and compromise of SMM execution environment.

Source: NVD