CVE-2021-34267 json
An in the USBH_MSC_InterfaceInit() function of STMicroelectronics STM32Cube Middleware v1.8.0 and below causes a denial of service (DOS) wh…
published 2021-07-22 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-20928
- cvss
- 4.6
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 29%
- public exploits
- 0
- none known
Summary
An in the USBH_MSC_InterfaceInit() function of STMicroelectronics STM32Cube Middleware v1.8.0 and below causes a denial of service (DOS) when the system tries to communicate with the connected endpoint.
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/STMicroelectronics/STM32CubeH7/issues/80 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 4.6 | CVSS:3.1/AV:P/AC:L/PR:N/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 |
References
-
github.com
/STMicroelectronics/STM32CubeH7/issues/80
exploit, third-party-advisory
Sources
- CVE List CVE-2021-34267
- NVD CVE-2021-34267
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