A buffer overflow vulnerability in the USBH_ParseEPDesc() function of STMicroelectronics…
Priority LOW 31CWE-120Published · Updated
Key facts
- Attack vector
- Physical
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.
Summary
A buffer overflow vulnerability in the USBH_ParseEPDesc() function of STMicroelectronics STM32Cube Middleware v1.8.0 and below allows attackers to execute arbitrary code.
Why it matters now
EPSS 0.00477 41st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged 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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:st:stm32cube_middleware:*:*:*:*:*:*:*:* | up to 1.8.0 | Vulnerable | STMicroelectronics |
| cpe:2.3:h:st:stm32h7b3:-:*:*:*:*:*:*:* | not specified by NVD | Running on | STMicroelectronics |
- cpe:2.3:a:st:stm32cube_middleware:*:*:*:*:*:*:*:* Versions up to 1.8.0 Vulnerable ·STMicroelectronics
- cpe:2.3:h:st:stm32h7b3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·STMicroelectronics
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-34262
- 2026-10-03 Alias added: GHSA-w3h6-g4rf-x858
References
More STMicroelectronics Stm32cube Middleware vulnerabilities
- TI-2021-13325 A buffer overflow vulnerability in the USBH_ParseInterfaceDesc() function of… CVSS 3.1MEDIUM 6.8
- TI-2021-13324 A buffer overflow vulnerability in the USBH_ParseCfgDesc() function of STMicroelectronics… CVSS 3.1MEDIUM 6.8
- TI-2021-13329 An issue in the USBH_ParseDevDesc() function of STMicroelectronics STM32Cube Middleware… CVSS 3.1MEDIUM 4.6
- TI-2021-13328 An in the USBH_MSC_InterfaceInit() function of STMicroelectronics STM32Cube Middleware… CVSS 3.1MEDIUM 4.6
- TI-2021-13326 An issue in USBH_ParseCfgDesc() of STMicroelectronics STM32Cube Middleware v1.8.0 and… CVSS 3.1MEDIUM 4.6
Sources
- CVE-2021-34262 · CVE Program
- CVE-2021-34262 · NVD
- FIRST EPSS
- GHSA-w3h6-g4rf-x858 · GitHub Advisory Database · CC BY 4.0
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