What’s Vulnerable › Vulnerabilities

CVE-2019-12588

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-09-04 · updated 2026-06-17
• Weakness: CWE-20

Description

The client 802.11 mac implementation in Espressif ESP8266_NONOS_SDK 2.2.0 through 3.1.0 does not validate correctly the RSN AuthKey suite list count in beacon frames, probe responses, and association responses, which allows attackers in radio range to cause a denial of service (crash) via a crafted message.

Affected products

• espressif Arduino Esp8266: through 2.5.2
• 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/esp8266-beacon-frame-crash/
• https://github.com/Matheus-Garbelini/esp32_esp8266_attacks
• https://github.com/espressif
• https://matheus-garbelini.github.io/home/post/esp8266-beacon-frame-crash/

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