Intel TDX MigTD: Denial of service due to unchecked return value
Summary
A flaw in the error handling of Intel's MigTD component for TDX trust domains (confidential VMs) does not check a return value (CWE-252). A local attacker with privileged access on the system software or hypervisor level can trigger a denial of service, affecting availability only. Network exposure and user interaction are not required, so the practical risk is low for typical SMEs.
Affected
- Intel(R) TDX Migration Trust Domain (MigTD); specific affected versions: Unknown. Check Intel advisory INTEL-SA-01580.
Fixed in
Unknown. Check Intel advisory INTEL-SA-01580 for fixed releases.
Workaround
- Restrict privileged user access on hosts running TDX/MigTD.
- Monitor for unusual MigTD-related behaviour until a fix is available.
- Intel's own mitigation guidance was not verified.
Exploitation
- Not known to be exploited, according to third-party aggregators.
- No public proof-of-concept found.
- Not verified against the CISA KEV catalogue.
Our recommendation
- Check whether any systems run Intel TDX or MigTD at all. If not, this CVE is likely not applicable.
- If TDX is used, review the Intel advisory INTEL-SA-01580 and apply the fixed MigTD releases together with the other MigTD CVEs of the same batch.
- Until a fix is applied, restrict privileged access to hosts and monitor them for unusual behaviour.
- Confirm the NVD score once analysis is complete.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Intel Advisory INTEL-SA-01580 intel.com
- Intel Security Center www.intel.com
- Strix CVE-2026-62920 www.strix.ai
- OffSeq Radar CVE-2026-62920 radar.offseq.com
- OffSeq Radar: Unchecked return value in MigTD error handling radar.offseq.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, 11:33.
Original description (NVD)
Unchecked return value in the MigTD error handling for the Intel(R) TDX Migration Trust Domain (MigTD) within Ring 0: Hypervisor may allow a denial of service. System software adversary with a privileged 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.
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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