CVE-2020-3482

MEDIUM

Cisco Expressway and TelePresence VCS < X12.6.3 - Unauthenticated Network Access Control Bypass via TURN Server

Title source: llm
STIX 2.1

Description

A vulnerability in the Traversal Using Relays around NAT (TURN) server component of Cisco Expressway software could allow an unauthenticated, remote attacker to bypass security controls and send network traffic to restricted destinations. The vulnerability is due to improper validation of specific connection information by the TURN server within the affected software. An attacker could exploit this issue by sending specially crafted network traffic to the affected software. A successful exploit could allow the attacker to send traffic through the affected software to destinations beyond the application, possibly allowing the attacker to gain unauthorized network access.

References (1)

Core 1
Core References

Scores

CVSS v3 6.5
EPSS 0.0020
EPSS Percentile 41.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-284 CWE-269
Status published
Products (2)
cisco/expressway < x12.6.3
cisco/telepresence_video_communication_server < x12.6.3
Published Nov 18, 2020
Tracked Since Feb 18, 2026