CVE-2021-34173

7.5 highEPSS 1.5%

High (7.5) in espressif esp32 firmware. EPSS 1.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 1.5% chance of exploitation in the next 30 days; higher than 73% of CVEs (scores of 2026-10-31)
Published: 2021-07-14
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

espressif:esp32_firmware

References

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

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