Intel TDX Migration Trust Domain (MigTD): Off-by-one error in vmcall_raw transport
Summary
An off-by-one error in the vmcall_raw transport of the Intel TDX Migration Trust Domain (MigTD) component within Ring 0 can be triggered by a local attacker with system software access. Successful exploitation may cause a denial of service or data corruption, with low impact on integrity and availability and no scored confidentiality impact. Intel rates the issue Medium (CVSS 4.0 5.1), and no privileges or user interaction are required.
Affected
- Intel(R) TDX Migration Trust Domain (MigTD), exact versions: Unknown (listed only in Intel advisory INTEL-SA-01580, not verified)
- Affected status is unclear: CVE data says default unaffected, version data says affected
Fixed in
Unknown. Check Intel advisory INTEL-SA-01580 for reference software updates.
Workaround
- No vendor workaround found.
- Restrict local access to trusted users only.
Exploitation
- Not listed in CISA KEV.
- No confirmed exploitation in the wild reported.
- No public exploit code found; VulDB notes technical details are known but no exploit is available.
Our recommendation
- Check whether you operate TDX-capable Intel Xeon hosts or confidential VMs using MigTD.
- Ask hosting or cloud providers whether they run TDX/MigTD and whether they have applied Intel updates.
- Apply Intel's MigTD or firmware updates once the fixed versions are confirmed in INTEL-SA-01580.
- Limit local access to hosts and monitor for updates.
- Priority is low for most SMEs; medium only for organisations running TDX or confidential-computing workloads.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Intel advisory INTEL-SA-01580 intel.com
- OpenCVE CVE-2026-61469 app.opencve.io
- OffSeq threat report CVE-2026-61469 radar.offseq.com
- VulDB entry 433970 vuldb.com
- Strix CVE-2026-61469 www.strix.ai
- Intel Product 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, 19:08.
Original description (NVD)
Off-by-one error in the MigTD's vmcall_raw transport 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.
Affected? We can help.
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