What’s Vulnerable › Vulnerabilities
CVE-2020-3155: Cisco Intelligent Proximity SSL Certificate Validation Vulnerability
- Severity: high (CVSS 7.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.9% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2020-03-04 · updated 2026-06-17
- Weakness: CWE-295
Description
A vulnerability in the SSL implementation of the Cisco Intelligent Proximity solution could allow an unauthenticated, remote attacker to view or alter information shared on Cisco Webex video devices and Cisco collaboration endpoints if the products meet the conditions described in the Vulnerable Products section. The vulnerability is due to a lack of validation of the SSL server certificate received when establishing a connection to a Cisco Webex video device or a Cisco collaboration endpoint. An attacker could exploit this vulnerability by using man in the middle (MITM) techniques to intercept the traffic between the affected client and an endpoint, and then using a forged certificate to impersonate the endpoint. Depending on the configuration of the endpoint, an exploit could allow the attacker to view presentation content shared on it, modify any content being presented by the victim, or have access to call controls. This vulnerability does not affect cloud registered collaboration endpoints.
Affected products
- Cisco Intelligence Proximity: all versions
- Cisco Jabber: all versions
- Cisco Meeting: all versions
- Cisco Telepresence Codec C40 Firmware: all versions
- Cisco Telepresence Codec C60 Firmware: all versions
- Cisco Telepresence Codec C90 Firmware: all versions
- Cisco Webex Meetings: all versions
- Cisco Webex Teams: all versions
References
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-proximity-ssl-cert-gBBu3RB
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-proximity-ssl-cert-gBBu3RB
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