What’s Vulnerable › Vulnerabilities

CVE-2021-34259

• Severity: medium (CVSS 6.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-07-22 · updated 2026-06-17
• Weakness: CWE-120

Description

A buffer overflow vulnerability in the USBH_ParseCfgDesc() function of STMicroelectronics STM32Cube Middleware v1.8.0 and below allows attackers to execute arbitrary code.

Affected products

• Stm32Cube Middleware: through 1.8.0

References

• https://github.com/STMicroelectronics/STM32CubeH7/issues/76
• https://github.com/STMicroelectronics/STM32CubeH7/issues/76

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