CVE-2019-12586

6.5 MEDIUM 1% exploit odds Fix listed

What it is

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.

At a glance

Exploitability: Can be exploited from the same network segment without logging in. High risk of service disruption.
Exploit odds: 1.5% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2019-09-04 20:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 02:14 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 1.5% in the next 30 days (EPSS).
Severity: 6.5 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2019-09-04 20:15 UTC
Last modified: 2026-06-17 02:14 UTC
Exploit probability: 1.5% · EPSS, next 30 days
Record status: Modified

Affected

Espressif arduino-esp32 ≤ 1.0.2
Espressif arduino-esp32 1.0.3
Espressif esp-idf ≤ 4.0.0
Espressif esp8266 Nonos Sdk ≤ 3.0.0

Attack profile CVSS 3.0 · 6.5

Attack vector: Adjacent network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Raw vector

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2019-12586.md and follow it. Check whether this project is affected by CVE-2019-12586. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record