CVE-2018-0422

What it is

A vulnerability in the folder permissions of Cisco Webex Meetings client for Windows could allow an authenticated, local attacker to modify locally stored files and execute code on a targeted device with the privilege level of the user. The vulnerability is due to folder permissions that grant a user the permission to read, write, and execute files in the Webex folders. An attacker could exploit this vulnerability to write malicious files to the Webex client directory, affecting all other users of the targeted device. A successful exploit could allow a user to execute commands with elevated privileges. Attacks on single-user systems are less likely to occur, as the attack must be carried out by the user on the user's own system. Multiuser systems have a higher risk of exploitation because folder permissions have an impact on all users of the device. For an attacker to exploit this vulnerability successfully, a second user must execute the locally installed malicious file to allow remote code execution to occur.

At a glance

Exploitability

Can be exploited locally on the machine with a low-privilege account, but needs a user to act. High risk of data exposure, data tampering, service disruption.

Exploit odds

1.1% chance of exploitation in the next 30 days (EPSS).

Fix

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

Timeline

1. 2018-10-05 14:29 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: 1.1% in the next 30 days (EPSS).
• Severity: 7.3 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2018-10-05 14:29 UTC

Last modified

2026-06-17 01:30 UTC

Exploit probability

1.1% · EPSS, next 30 days

Weakness

CWE-732 · Incorrect permission assignment

Record status

Modified

Affected

• Cisco Webex Meetings Online < 1.3.37
• Cisco Webex Meetings Online t31.20
• Cisco Webex Meetings Online t31.20.2
• Cisco Webex Meetings Server ≤ 3.0
• Cisco Webex Meetings Server 3.0
• Cisco Webex Business Suite 32 < 32.15.20
• Cisco Webex Business Suite 33 < 33.4
• Cisco Webex Business Suite 31

Attack profile CVSS 3.0 · 7.3

Attack vector

Local

Complexity

Low

Privileges needed

Low

User interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

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-2018-0422.md and follow it. Check whether this project is affected by CVE-2018-0422. 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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