Intel TDX MigTD: Improper initialization in virtio-vsock stream handling
Summary
Intel's MigTD component, which handles migration of protected trust domains in Intel TDX (confidential computing), contains an improper initialization flaw in its virtio-vsock stream handling. A local attacker with access to the system software layer, without authentication and without user interaction, can cause a denial of service and possibly corrupt data. The CVE record rates the flaw Medium (CVSS 4.0 base score 5.1).
Affected
- Intel TDX Migration Trust Domain (MigTD); the CVE record only says "See references".
- Exact affected versions: Unknown. See Intel advisory INTEL-SA-01580.
Fixed in
Unknown. No fixed version was found in the sources; check Intel advisory INTEL-SA-01580.
Workaround
Unknown. No vendor mitigation text was retrieved.
Exploitation
- Not listed in CISA KEV; no in-the-wild exploitation reported in the sources.
- No public exploit code or proof of concept known as of 10 Nov 2026.
- EPSS below 1% (early aggregator data).
Our recommendation
- Check whether you use Intel TDX or hosting/cloud services that do. If not, no action is needed.
- Ask hosting or cloud providers whether they run TDX hosts and what their plan is for INTEL-SA-01580.
- Review the Intel advisory for affected and fixed versions and apply vendor updates once available.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Intel Security Advisory INTEL-SA-01580 intel.com
- OpenCVE: CVE-2026-63028 app.opencve.io
- Strix: CVE-2026-63028 www.strix.ai
- OffSeq Radar: Improper initialization in MigTD virtio-vsock stream handling radar.offseq.com
- Intel Security Center www.intel.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 11 Nov 2026, 19:07.
Original description (NVD)
Improper initialization in the MigTD virtio-vsock stream handling 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 data corruption. 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 (low) and availability (low) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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