CVE-2021-34173
CVSS v3
7.5
HIGH
EPSS Score
1.5 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2021-07-14
Frequently asked questions
What is CVE-2021-34173?
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.
Is CVE-2021-34173 actively exploited?
Active exploitation of CVE-2021-34173 has not been confirmed. Its EPSS score was 1.5% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-34173?
CVE-2021-34173 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2021-34173 affecting your environment?
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