CVE-2020-3482— Cisco Expressway Software Unauthorized Access Information Disclosure Vulnerability
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2020-3482
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Cisco Expressway Software Unauthorized Access Information Disclosure Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
访问控制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco Expressway Series 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Expressway Series是美国思科（Cisco）公司的一款用于防火墙外访问设备的软件。该软件为防火墙外的用户提供了简单、高度安全的访问功能，帮助远程办公人员在他们选择的设备上更有效地工作。 Cisco Expressway Series Traversal Using Relays around NAT 存在安全漏洞，该漏洞源于在受影响的软件内的TURN服务器对特定连接信息的错误验证造成的。攻击者可利用该漏洞绕过安全控制，将网络流量发送到受限目的地。成功利用该漏洞可以让攻击者通过受影
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Cisco | Cisco TelePresence Video Communication Server (VCS) Expressway | n/a | - |
II. Public POCs for CVE-2020-3482
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2020-3482
请登录查看更多情报信息。
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-Expressway-8J3yZ7hVvendor-advisoryx_refsource_CISCO
- https://nvd.nist.gov/vuln/detail/CVE-2020-3482
Same Patch Batch · Cisco · 2020-11-18 · 19 CVEs total
| CVE-2020-3470 | 9.8 CRITICAL | Cisco Integrated Management Controller Multiple Remote Code Execution Vulnerabilities |
| CVE-2020-3586 | 9.4 CRITICAL | Cisco DNA Spaces Connector Command Injection Vulnerability |
| CVE-2020-3471 | 6.5 MEDIUM | Cisco Webex Meetings and Cisco Webex Meetings Server Unauthorized Audio Information Exposu |
| CVE-2020-3419 | 6.5 MEDIUM | Cisco Webex Meetings and Cisco Webex Meetings Server Ghost Join Vulnerability |
| CVE-2020-27126 | 6.1 MEDIUM | Cisco Webex Meetings API Cross-Site Scripting Vulnerability |
| CVE-2020-26068 | 5.5 MEDIUM | Cisco Telepresence CE Software and RoomOS Software Unauthorized Token Generation Vulnerabi |
| CVE-2020-3441 | 5.3 MEDIUM | Cisco Webex Meetings and Cisco Webex Meetings Server Information Disclosure Vulnerability |
| CVE-2020-26078 | Cisco IoT Field Network Director File Overwrite Vulnerability | |
| CVE-2020-26079 | Cisco IoT Field Network Director Unprotected Storage of Credentials Vulnerability | |
| CVE-2020-26080 | Cisco IoT Field Network Director Improper Domain Access Control Vulnerability | |
| CVE-2020-26081 | Cisco IoT Field Network Director Cross-Site Scripting Vulnerabilities | |
| CVE-2020-3367 | Cisco Secure Web Appliance Privilege Escalation Vulnerability | |
| CVE-2020-3392 | Cisco IoT Field Network Director Missing API Authentication Vulnerability | |
| CVE-2020-26077 | Cisco IoT Field Network Director Improper Access Control Vulnerability | |
| CVE-2020-26076 | Cisco IoT Field Network Director Information Disclosure Vulnerability | |
| CVE-2020-26075 | Cisco IoT Field Network REST API Insufficient Input Validation Vulnerability | |
| CVE-2020-3531 | Cisco IoT Field Network Director Unauthenticated REST API Vulnerability | |
| CVE-2020-26072 | Cisco IoT Field Network Director SOAP API Authorization Bypass Vulnerability |
IV. Related Vulnerabilities
- CVE-2025-20179
Cisco Expressway Series Cross-Site Scripting Vulnerability - CVE-2022-20814
Cisco Expressway Series and Cisco TelePresence VCS Improper - CVE-2022-20853
Cisco Expressway Series and Cisco TelePresence VCS Cross-Sit - CVE-2024-20492
Cisco Expressway Series Privilege Escalation Vulnerability - CVE-2024-20497
Cisco Expressway Edge Improper Authorization Vulnerability
Same vendor: Cisco
- CVE-2026-20219
Cisco Slido 安全漏洞 - CVE-2026-20034
Cisco Unity Connection Remote Code Execution Vulnerability - CVE-2026-20035
Cisco Unity Connection Server-Side Request Forgery Vulnerabi - CVE-2026-20167
Cisco IoT Field Network Director Remote Device Denial of Ser - CVE-2026-20169
Cisco IoT Field Network Director Command Injection Vulnerabi
Same weakness: CWE-284
- CVE-2026-8233
Dotouch XproUPF access control - CVE-2026-42569
phpvms: /importer authorization bypass causing full database - CVE-2026-42205
Avo: Broken Access Control: Unauthorized Execution of Arbitr - CVE-2026-41487
Langfuse: Improper role-based-access control in Langfuse LLM - CVE-2026-42278
UltraDAG: Smart Account Spending Policy Bypass via Pockets
V. Comments for CVE-2020-3482
No comments yet