CVE-2019-1756— Cisco IOS XE Software Command Injection Vulnerability
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I. Basic Information for CVE-2019-1756
Vulnerability Information
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Vulnerability Title
Cisco IOS XE Software Command Injection Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in Cisco IOS XE Software could allow an authenticated, remote attacker to execute commands on the underlying Linux shell of an affected device with root privileges. The vulnerability occurs because the affected software improperly sanitizes user-supplied input. An attacker who has valid administrator access to an affected device could exploit this vulnerability by supplying a username with a malicious payload in the web UI and subsequently making a request to a specific endpoint in the web UI. A successful exploit could allow the attacker to run arbitrary commands as the root user, allowing complete compromise of the system.
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 IOS XE 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS XE是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco IOS XE中存在输入验证漏洞，该漏洞源于程序没有正确地过滤用户提交的输入。当Web服务器功能被启用时，攻击者可通过提交带有恶意payload的用户名利用该漏洞以root用户身份执行任意命令。
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 IOS XE Software | 3.2.0JA | - |
II. Public POCs for CVE-2019-1756
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190327-iosxe-cmdinjectvendor-advisoryx_refsource_CISCO
- https://nvd.nist.gov/vuln/detail/CVE-2019-1756
Same Patch Batch · Cisco · 2019-03-28 · 12 CVEs total
| CVE-2019-1751 | Cisco IOS Software NAT64 Denial of Service Vulnerability | |
| CVE-2019-1752 | Cisco IOS and IOS XE Software ISDN Interface Denial of Service Vulnerability | |
| CVE-2019-1753 | Cisco IOS XE Software Privilege Escalation Vulnerability | |
| CVE-2019-1755 | Cisco IOS XE Software Command Injection Vulnerability | |
| CVE-2019-1754 | Cisco IOS XE Software Privilege Escalation Vulnerability | |
| CVE-2019-1758 | Cisco IOS Software Catalyst 6500 Series 802.1x Authentication Bypass Vulnerability | |
| CVE-2019-1757 | Cisco IOS and IOS XE Software Smart Call Home Certificate Validation Vulnerability | |
| CVE-2019-1761 | Cisco IOS and IOS XE Software Hot Standby Router Protocol Information Leak Vulnerability | |
| CVE-2019-1760 | Cisco IOS XE Software Performance Routing Version 3 Denial of Service Vulnerability | |
| CVE-2019-1759 | Cisco IOS XE Software Gigabit Ethernet Management Interface Access Control List Bypass Vul | |
| CVE-2019-1762 | Cisco IOS and IOS XE Software Information Disclosure Vulnerability |
IV. Related Vulnerabilities
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-2019-1756
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