What’s Vulnerable › Vulnerabilities

CVE-2019-12586

• Severity: medium (CVSS 6.5 v3.0)
• 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: 2019-09-04 · updated 2026-06-17

Description

The EAP peer implementation in Espressif ESP-IDF 2.0.0 through 4.0.0 and ESP8266_NONOS_SDK 2.2.0 through 3.1.0 processes EAP Success messages before any EAP method completion or failure, which allows attackers in radio range to cause a denial of service (crash) via a crafted message.

Affected products

• espressif arduino-esp32: through 1.0.2; 1.0.3, 1.0.3-rc1, 1.0.3-rc2
• espressif esp-idf: from 2.0.0 through 4.0.0
• espressif Esp8266 Nonos Sdk: from 2.2.0 through 3.0.0

References

• https://github.com/Matheus-Garbelini/esp32_esp8266_attacks
• https://github.com/espressif
• https://matheus-garbelini.github.io/home/post/esp32-esp8266-eap-crash/
• https://github.com/Matheus-Garbelini/esp32_esp8266_attacks
• https://github.com/espressif
• https://matheus-garbelini.github.io/home/post/esp32-esp8266-eap-crash/

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