What’s Vulnerable › Vulnerabilities

CVE-2021-34173

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-07-14 · updated 2026-06-17

Description

An attacker can cause a Denial of Service and kernel panic in v4.2 and earlier versions of Espressif esp32 via a malformed beacon csa frame. The device requires a reboot to recover.

Affected products

• Espressif ESP32: through 4.2

References

• https://github.com/E7mer
• https://github.com/E7mer/OWFuzz
• https://github.com/E7mer
• https://github.com/E7mer/OWFuzz

Get alerted when CVE-2021-34173 or the next vulnerability affects your stack