Vulnerability in Cisco Webex Teams
CVE-2025-20236
A vulnerability in the custom URL parser of Cisco Webex App could allow an unauthenticated, remote attacker to persuade a user to download arbitrary files, which could allow the attacker to execute arbitrary commands on the host of the targeted user. This vulnerability is due to insufficient input validation when Cisco Webex App processes a meeting invite link. An attacker could exploit this vulnerability by persuading a user to click a crafted meeting invite link and download arbitrary files. A successful exploit could allow the attacker to execute arbitrary commands with the privileges of the targeted user.
EPSS: 0.009 (58.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Cisco Webex Teams — versions 44.6, 44.6.0.29928, 44.6.0.30148
- Cisco Webex_teams — versions 44.6, 44.6.0.29928, 44.6.0.30148
Weakness classification (CWE)
Public proof-of-concept exploits
References
- psirt@cisco.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-20236?
- CVE-2025-20236 is a high-severity vulnerability in Cisco Webex Teams, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 8.8/10. Published 2025-04-16.
- How severe is CVE-2025-20236?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2025-20236 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.