CVE-2019-1720— Cisco Expressway Series and Cisco TelePresence Video Communication Server Denial of Service Vulnerability
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I. Basic Information for CVE-2019-1720
Vulnerability Information
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Vulnerability Title
Cisco Expressway Series and Cisco TelePresence Video Communication Server Denial of Service Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the XML API of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow an authenticated, remote attacker to cause the CPU to increase to 100% utilization, causing a denial of service (DoS) condition on an affected system. The vulnerability is due to improper handling of the XML input. An attacker could exploit this vulnerability by sending a specifically crafted XML payload. A successful exploit could allow the attacker to exhaust CPU resources, resulting in a DoS condition until the system is manually rebooted. Software versions prior to X12.5.1 are affected.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco Expressway Series和Cisco TelePresence Video Communication Server 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Expressway Series和Cisco TelePresence Video Communication Server（VCS）都是美国思科（Cisco）公司的产品。Cisco Expressway Series是一款用于统一通信的高级协作网关。Cisco TelePresence Video Communication Server是一款视频通信服务器。 Cisco Expressway Series和Cisco TelePresence VCS中的XML API存在输入验证错误漏洞
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) | unspecified ~ X12.5.1 | - |
II. Public POCs for CVE-2019-1720
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-ces-tvcs-dosvendor-advisoryx_refsource_CISCO
- https://nvd.nist.gov/vuln/detail/CVE-2019-1720
Same Patch Batch · Cisco · 2019-04-18 · 23 CVEs total
| CVE-2019-1797 | Cisco Wireless LAN Controller Software Cross-Site Request Forgery Vulnerability | |
| CVE-2019-1719 | Cisco Identity Services Engine Cross-Site Scripting Vulnerability | |
| CVE-2019-1722 | Cisco Expressway Series and Cisco TelePresence Video Communication Server Cross-Site Reque | |
| CVE-2019-1721 | Cisco Expressway Series and Cisco TelePresence Video Communication Server Denial of Servic | |
| CVE-2019-1777 | Cisco Registered Envelope Service Stored Cross-Site Scripting Vulnerability | |
| CVE-2019-1725 | Cisco UCS B-Series Blade Servers Local Management CLI Arbitrary File Creation or CLI Param | |
| CVE-2019-1792 | Cisco Umbrella Cross-Site Scripting Vulnerability | |
| CVE-2019-1794 | Cisco Directory Connector Search Order Hijacking Vulnerability | |
| CVE-2019-1799 | Cisco Wireless LAN Controller Software IAPP Message Handling Denial of Service Vulnerabili | |
| CVE-2019-1796 | Cisco Wireless LAN Controller Software IAPP Message Handling Denial of Service Vulnerabili | |
| CVE-2019-1800 | Cisco Wireless LAN Controller Software IAPP Message Handling Denial of Service Vulnerabili | |
| CVE-2019-1841 | Cisco DNA Center Unintended Proxy Via SWIM Import Interface Vulnerability | |
| CVE-2019-1805 | Cisco Wireless LAN Controller Secure Shell Unauthorized Access Vulnerability | |
| CVE-2019-1802 | Cisco Firepower Management Center Persistent Cross-Site Scripting Vulnerability | |
| CVE-2019-1830 | Cisco Wireless LAN Controller Locally Significant Certificate Denial of Service Vulnerabil | |
| CVE-2019-1829 | Cisco Aironet Series Access Points Command Injection Vulnerability | |
| CVE-2019-1826 | Cisco Aironet Series Access Points Quality of Service Denial of Service Vulnerability | |
| CVE-2019-1835 | Cisco Aironet Series Access Points Directory Traversal Vulnerability | |
| CVE-2019-1834 | Cisco Aironet Series Access Points Denial of Service Vulnerability | |
| CVE-2019-1831 | Cisco Email Security Appliance Content Filter Bypass Vulnerability |
Showing top 20 of 23 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Cisco TelePresence Video Communication Server (VCS)
- CVE-2019-12705
Cisco Expressway Series and TelePresence Video Communication - CVE-2019-1872
Cisco TelePresence Video Communication Server and Cisco Expr - CVE-2019-1845
Cisco Unified Communications Manager IM&P Service, Cisco Tel - CVE-2019-1721
Cisco Expressway Series and Cisco TelePresence Video Communi - CVE-2019-1722
Cisco Expressway Series and Cisco TelePresence Video Communi
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-20
V. Comments for CVE-2019-1720
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