CVE-2025-20236

Cisco Webex App Client-Side Remote Code Execution Vulnerability

Published Apr 16, 2025 CVSS 3.1 · 8.8 High EPSS 1.0% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-11394 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.
History
Type Values Removed Values Added
First Time appeared Cisco
Cisco webex Teams
CPEs cpe:2.3:a:cisco:webex_teams:44.6.0.29928:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_teams:44.6.0.30148:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_teams:44.6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_teams:44.7.0.30141:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_teams:44.7.0.30285:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_teams:44.7:*:*:*:*:*:*:*
Vendors & Products Cisco
Cisco webex Teams
Type Values Removed Values Added
Description 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. 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.
Title Cisco Webex App Client-Side Remote Code Execution Vulnerability
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Weaknesses CWE-829
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
cisco
Published
Updated
Feb 26, 2026, 6:28 PM
Reserved
Oct 10, 2024, 7:15 PM
Status
Analyzed
Published
Apr 16, 2025, 5:15 PM
Modified
Jun 17, 2026, 8:41 AM