What’s Vulnerable › Vulnerabilities

CVE-2019-12587

• Severity: high (CVSS 8.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-09-04 · updated 2026-06-17
• Weakness: CWE-327

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 allows the installation of a zero Pairwise Master Key (PMK) after the completion of any EAP authentication method, which allows attackers in radio range to replay, decrypt, or spoof frames via a rogue access point.

Affected products

• espressif esp-idf: from 2.0.0 through 4.0.0
• espressif Esp8266 Nonos Sdk: from 2.2.0 through 3.1.0

References

• https://github.com/Matheus-Garbelini/esp32_esp8266_attacks
• https://github.com/espressif
• https://matheus-garbelini.github.io/home/post/zero-pmk-installation/
• https://github.com/Matheus-Garbelini/esp32_esp8266_attacks
• https://github.com/espressif
• https://matheus-garbelini.github.io/home/post/zero-pmk-installation/

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