CVE-2021-21819
Quick assessment
Affected
n/a D-Link
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
D-Link D-LINK DIR-3040是中国台湾友讯（D-Link）公司的一个路由器。提供连接网络的功能。 D-LINK DIR-3040 存在操作系统命令注入漏洞，该漏洞源于Libcli 测试环境功能中存在代码执行漏洞。特制的网络请求可能导致任意命令执行。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-21819
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A code execution vulnerability exists in the Libcli Test Environment functionality of D-LINK DIR-3040 1.13B03. A specially crafted network request can lead to arbitrary command execution. An attacker can send a sequence of requests to trigger this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
D-LINK DIR-3040 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
D-Link D-LINK DIR-3040是中国台湾友讯（D-Link）公司的一个路由器。提供连接网络的功能。 D-LINK DIR-3040 存在操作系统命令注入漏洞，该漏洞源于Libcli 测试环境功能中存在代码执行漏洞。特制的网络请求可能导致任意命令执行。
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 |
|---|---|---|---|---|
| - | D-Link | D-LINK DIR-3040 1.13B03 | - |
|
II. Public POCs for CVE-2021-21819
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2021-21819 (1)
-
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1284 x_refsource_MISC
Same Patch Batch · n/a · 2021-07-16 · 15 CVEs total
| CVE-2021-36769 | Telegram 加密问题漏洞 | |
| CVE-2021-28053 | Centreon SQL注入漏洞 | |
| CVE-2021-28054 | Centreon 跨站脚本漏洞 | |
| CVE-2021-28114 | Froala WYSIWYG Editor 跨站脚本漏洞 | |
| CVE-2021-21803 | Advantech R-SeeNet 跨站脚本漏洞 | |
| CVE-2021-21802 | Advantech R-SeeNet 跨站脚本漏洞 | |
| CVE-2021-21801 | Advantech R-SeeNet 跨站脚本漏洞 | |
| CVE-2021-21804 | Advantech R-SeeNet 安全漏洞 | |
| CVE-2021-21800 | Advantech R-SeeNet 跨站脚本漏洞 | |
| CVE-2021-21799 | Advantech R-SeeNet 跨站脚本漏洞 | |
| CVE-2021-21816 | D-LINK DIR-3040 信息泄露漏洞 | |
| CVE-2021-21817 | D-LINK DIR-3040 信息泄露漏洞 | |
| CVE-2021-21818 | D-Link D-LINK DIR-3040 信任管理问题漏洞 | |
| CVE-2021-21820 | D-LINK DIR-3040 信任管理问题漏洞 |
IV. Related Vulnerabilities
Same vendor: n/a
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DeepTutor v1.4.0 命令执行漏洞 -
CVE-2026-51858
camel-ai 0.2.91a3 shell_exec命令执行漏洞
Same weakness: CWE-78
V. Comments for CVE-2021-21819
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