PatchSiren cyber security CVE debrief

CVE-2026-40677 AMD CVE debrief

CVE-2026-40677 is a HIGH-severity vulnerability (CVSS score: 7.7) that was published on 2026-06-12T16:16:27.400Z and modified on 2026-06-12T16:22:46.947Z. The vulnerability is related to the use of insecure HTTP transport within AMD optional tools, which could allow an attacker to conduct a man-in-the-middle attack, potentially leading to arbitrary code execution. The CVE record [resourceLinkAnnotations:cve-org] and NVD detail [resourceLinkAnnotations:nvd] provide more information about this vulnerability.

Vendor: AMD
Product: AMD Management Console (AMC)
CVSS: HIGH 7.7
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-06-12
Original CVE updated: 2026-06-12
Advisory published: 2026-06-12
Advisory updated: 2026-06-12

Who should care

Security teams and administrators responsible for AMD-based systems should be aware of this vulnerability and take necessary actions to mitigate the risk.

Technical summary

The vulnerability is caused by the use of insecure HTTP transport within AMD optional tools. This could allow an attacker to conduct a man-in-the-middle attack, potentially leading to arbitrary code execution.

Defensive priority

HIGH

Recommended defensive actions

Review and apply security updates from AMD [resourceLinkAnnotations:ref-4].
Use secure communication protocols (e.g., HTTPS) for data transmission.
Monitor system logs for suspicious activity.

Evidence notes

The vendor is identified as 'Unknown Vendor' with low confidence, and the product name is not specified. However, the evidence suggests that the affected product is related to AMD.

Official resources

CVE-2026-40677 was published on 2026-06-12T16:16:27.400Z and modified on 2026-06-12T16:22:46.947Z.