Privilege escalation in Cisco Telepresence Video Communication Server (Vcs) Expressway
CVE-2020-3482
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.014 (71.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 71.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000
Affected products
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-Expressw… (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-3482?
- CVE-2020-3482 is a medium-severity vulnerability in Cisco Telepresence Video Communication Server (Vcs) Expressway, classified under Improper Access Control. CVSS score: 6.5/10. Published 2020-11-18.
- How severe is CVE-2020-3482?
- Medium severity. CVSS v3 base score is 6.5 out of 10.