# CVE-2026-55709 — Intel(R) TDX Migration Trust Domain (MigTD)

> As of 2026-11-11, CVE-2026-55709 is a Medium-severity (band derived from the CVSS v4.0 score, not stated by the CNA) vulnerability in Intel(R) TDX Migration Trust Domain (MigTD), CVSS v4.0 6.9. Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-55709, most recently “Intel and AMD November 2026 Patch Tuesday: 200+ vulnerabilities incl. critical TDX MigTD flaws (CVE-2026-61887, CVE-2026-44685, CVE-2026-61473)”.

**Last updated:** 2026-11-11

## What is CVE-2026-55709?

Loop with unreachable exit condition ('infinite loop') in the MigTD's GetQuote for the Intel(R) TDX Migration Trust Domain (MigTD) within Ring 0: Hypervisor may allow a denial of service. System software adversary with an unauthenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

The record classifies CVE-2026-55709 under weakness class [CWE-835](https://intel.threadlinqs.com/cwe/CWE-835). 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 1 day ago.

## Severity and exploitation probability

- **CVSS v4.0 base score:** 6.9 — Medium (derived from score) (`CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`)
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 3.5/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-11-10

## Is CVE-2026-55709 being exploited?

It currently carries a trending score of 35 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **(vendor unspecified)**: Intel(R) TDX Migration Trust Domain (MigTD)

## How to fix CVE-2026-55709

No vendor patch reference has been recorded for CVE-2026-55709 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-55709

1 tracked threat in the Threadlinqs corpus references CVE-2026-55709, either in the campaign’s CVE list or as an indicator on the campaign record.

- [Intel and AMD November 2026 Patch Tuesday: 200+ vulnerabilities incl. critical TDX MigTD flaws (CVE-2026-61887, CVE-2026-44685, CVE-2026-61473)](https://intel.threadlinqs.com/threat/TL-2026-5745) — CRITICAL · 2026-11-11

## Sources

Enriched from CVE.org, NVD. This product uses the NVD API but is not endorsed or certified by the NVD.

**Other references**

- [intel.com](https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01580.html)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-55709
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