CVE-2018-0412

What it is

A vulnerability in the implementation of Extensible Authentication Protocol over LAN (EAPOL) functionality in Cisco Small Business 100 Series Wireless Access Points and Cisco Small Business 300 Series Wireless Access Points could allow an unauthenticated, adjacent attacker to force the downgrade of the encryption algorithm that is used between an authenticator (access point) and a supplicant (Wi-Fi client). The vulnerability is due to the improper processing of certain EAPOL messages that are received during the Wi-Fi handshake process. An attacker could exploit this vulnerability by establishing a man-in-the-middle position between a supplicant and an authenticator and manipulating an EAPOL message exchange to force usage of a WPA-TKIP cipher instead of the more secure AES-CCMP cipher. A successful exploit could allow the attacker to conduct subsequent cryptographic attacks, which could lead to the disclosure of confidential information. Cisco Bug IDs: CSCvj29229.

At a glance

Exploitability

Can be exploited from the same network segment without logging in. High risk of data tampering.

Exploit odds

0.3% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2018-08-15 20:29 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 01:30 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.3% in the next 30 days (EPSS).
• Severity: 5.3 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2018-08-15 20:29 UTC

Last modified

2026-06-17 01:30 UTC

Exploit probability

0.3% · EPSS, next 30 days

Weakness

CWE-310

Record status

Modified

Affected

• Cisco wap121 Firmware ≤ 1.0.6.6
• Cisco wap125 Firmware ≤ 1.0.6.6
• Cisco wap131 Firmware ≤ 1.0.6.6
• Cisco wap150 Firmware ≤ 1.0.6.6
• Cisco wap321 Firmware ≤ 1.0.6.6
• Cisco wap351 Firmware ≤ 1.0.6.6
• Cisco wap361 Firmware ≤ 1.0.6.6
• Cisco wap371 Firmware ≤ 1.0.6.6

Attack profile CVSS 3.0 · 5.3

Attack vector

Adjacent network

Complexity

High

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

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.

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