CVE-2019-1891— Cisco Small Business Series Switches HTTP Denial of Service Vulnerability
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I. Basic Information for CVE-2019-1891
Vulnerability Information
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Vulnerability Title
Cisco Small Business Series Switches HTTP Denial of Service Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the web interface of Cisco Small Business 200, 300, and 500 Series Managed Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper validation of requests sent to the web interface. An attacker could exploit this vulnerability by sending a malicious request to the web interface of an affected device. A successful exploit could allow the attacker to cause an unexpected reload of the device, resulting in a DoS condition.
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 Small Business 200、300和500 Series Managed Switches 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Small Business 200 Series Managed Switches等都是美国思科（Cisco）公司的产品。Cisco Small Business 200 Series Managed Switches是一款200系列管理型交换机。Cisco?Small Business 300 Series Managed Switches是一款300系列管理型交换机。Cisco?Small Business 500 Series Managed Switches是一款500系列管理型交换
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 Small Business 300 Series Managed Switches | unspecified ~ 1.4.10.6 | - |
II. Public POCs for CVE-2019-1891
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-sbss-dosvendor-advisoryx_refsource_CISCO
- https://nvd.nist.gov/vuln/detail/CVE-2019-1891
Same Patch Batch · Cisco · 2019-07-06 · 13 CVEs total
| CVE-2019-1930 | Cisco Firepower Management Center RSS Cross-Site Scripting Vulnerabilities | |
| CVE-2019-1931 | Cisco Firepower Management Center RSS Cross-Site Scripting Vulnerabilities | |
| CVE-2019-1932 | Cisco Advanced Malware Protection for Endpoints Windows Command Injection Vulnerability | |
| CVE-2019-1933 | Cisco Email Security Appliance Content Filter Bypass Vulnerability | |
| CVE-2019-1921 | Cisco Email Security Appliance Content Filter Bypass Vulnerability | |
| CVE-2019-1922 | Cisco IP Phone 7800 and 8800 Series Session Initiation Protocol Denial of Service Vulnerab | |
| CVE-2019-1893 | Cisco Enterprise NFV Infrastructure Software Command Injection Vulnerability | |
| CVE-2019-1894 | Cisco Enterprise NFV Infrastructure Software Arbitrary File Read and Write Vulnerability | |
| CVE-2019-1909 | Cisco IOS XR Software Border Gateway Protocol Denial of Service Vulnerability | |
| CVE-2019-1911 | Cisco Unified Communications Domain Manager Restricted Shell Escape Vulnerability | |
| CVE-2019-1887 | Cisco Unified Communications Manager Session Initiation Protocol Denial of Service Vulnera | |
| CVE-2019-1892 | Cisco Small Business Series Switches Memory Corruption Vulnerability |
IV. Related Vulnerabilities
Same product: Cisco Small Business 300 Series Managed Switches
- CVE-2020-3147
Cisco Small Business Switches Denial of Service Vulnerabilit - CVE-2019-1943
Cisco Small Business Series Switches Open Redirect Vulnerabi - CVE-2019-1892
Cisco Small Business Series Switches Memory Corruption Vulne - CVE-2019-1814
Cisco Small Business 300 Series Managed Switches DHCP Denial - CVE-2018-15439
Cisco Small Business Switches Privileged Access Vulnerabilit
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-2019-1891
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