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TI-2020-18105 Aliases CVE-2020-35609GHSA-8xr7-5cxh-6x35

A denial-of-service vulnerability exists in the asynchronous ioctl functionality of…

Priority LOW 28CWE-835Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-835.

Summary

A denial-of-service vulnerability exists in the asynchronous ioctl functionality of Microsoft Azure Sphere 20.05. A sequence of specially crafted ioctl calls can cause a denial of service. An attacker can write shellcode to trigger this vulnerability.

Why it matters now

EPSS 0.01337 71st percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:azure_sphere:20.05:*:*:*:*:*:*:*20.05VulnerableMicrosoft
  • cpe:2.3:a:microsoft:azure_sphere:20.05:*:*:*:*:*:*:* Versions 20.05 Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-35609
  2. 2026-10-03 Alias added: GHSA-8xr7-5cxh-6x35

References

Exploit 2

  • TI-2021-08650 Azure Sphere Unsigned Code Execution Vulnerability CVSS 3.1CRITICAL 9.3
  • TI-2020-18104 A code execution vulnerability exists in the normal world’s signed code execution… CVSS 3.1HIGH 7.8
  • TI-2020-12956 Azure Sphere Unsigned Code Execution Vulnerability CVSS 3.1HIGH 8.8
  • TI-2020-12978 Azure Sphere Elevation of Privilege Vulnerability CVSS 3.1HIGH 8.2
  • TI-2020-12980 Azure Sphere Unsigned Code Execution Vulnerability CVSS 3.1HIGH 7.3
  • TI-2020-12973 Azure Sphere Unsigned Code Execution Vulnerability CVSS 3.1HIGH 7.8
See all 28 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences