CVE-2020-35609 json
A denial-of-service vulnerability exists in the asynchronous ioctl functionality of Microsoft Azure Sphere 20.05.
published 2020-12-22 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-23275
- cvss
- 5.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 71%
- public exploits
- 0
- none known
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.
Exploit prediction
1.34% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- talosintelligence.com https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1117 referenced PoC, tagged "exploit" by a source, unverified
- talosintelligence.com https://talosintelligence.com/vulnerability_reports/TALOS-2020-1117 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 2.1 | AV:L/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-835 Loop with Unreachable Exit Condition
References
-
talosintelligence.com
/vulnerability_reports/TALOS-2020-1117
exploit, third-party-advisory
-
talosintelligence.com
/vulnerability_reports/TALOS-2020-1117
exploit, third-party-advisory
Sources
- CVE List CVE-2020-35609
- NVD CVE-2020-35609
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