CVE-2018-0436: Cisco Webex Teams Information Disclosure and Modification Vulnerability

Severity: high (CVSS 8.7 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: none known
Published: 2018-10-05 · updated 2026-06-17
Weakness: CWE-284

Description

A vulnerability in Cisco Webex Teams, formerly Cisco Spark, could allow an authenticated, remote attacker to view and modify data for an organization other than their own organization. The vulnerability exists because the affected software performs insufficient checks for associations between user accounts and organization accounts. An attacker who has administrator or compliance officer privileges for one organization account could exploit this vulnerability by using those privileges to view and modify data for another organization account. No customer data was impacted by this vulnerability.

Affected products

Cisco Webex Teams: before 10.6.0 — fixed in 10.6.0

How to fix

Upgrade to a fixed version: Cisco Webex Teams 10.6.0. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2018-0436 or the next vulnerability affects your stack