CVE-2026-7548— Totolink NR1800X cstecgi.cgi sub_41A68C command injection
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I. Basic Information for CVE-2026-7548
Vulnerability Information
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Vulnerability Title
Totolink NR1800X cstecgi.cgi sub_41A68C command injection
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was detected in Totolink NR1800X 9.1.0u.6279_B20210910. This affects the function sub_41A68C of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument setUssd results in command injection. The attack is possible to be carried out remotely. The exploit is now public and may be used.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
TOTOLINK NR1800X 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK NR1800X是中国吉翁电子（TOTOLINK）公司的一款出色的 5G NR 室内Wi-Fi和SIP CPE。旨在为家庭和办公室提供快速便捷的 NR 固定数据服务部署。 TOTOLINK NR1800X 9.1.0u.6279_B20210910版本存在注入漏洞，该漏洞源于文件/cgi-bin/cstecgi.cgi中sub_41A68C函数对参数setUssd的操作，可能导致命令注入。
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
II. Public POCs for CVE-2026-7548
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCVerified env Premium
claude_code · 7603 chars
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III. Intelligence Information for CVE-2026-7548
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- CVE-2026-7548 | Totolink NR1800X 9.1.0u.6279_B20210910 /cgi-bin/cstecgi.cgi sub_41A68C setUssd command injectionvdb-entrytechnical-description
- https://nvd.nist.gov/vuln/detail/CVE-2026-7548
Same Patch Batch · Totolink · 2026-05-01 · 3 CVEs total
| CVE-2026-7546 | 9.8 CRITICAL | Totolink NR1800X lighttpd find_host_ip stack-based overflow |
| CVE-2026-7538 | 9.8 CRITICAL | Totolink A8000RU CGI cstecgi.cgi vulnerability os command injection |
IV. Related Vulnerabilities
Same product: NR1800X
- CVE-2026-7546
Totolink NR1800X lighttpd find_host_ip stack-based overflow - CVE-2026-5030
Totolink NR1800X Telnet Service cstecgi.cgi NTPSyncWithHost - CVE-2026-1328
Totolink NR1800X POST Request cstecgi.cgi setWizardCfg buffe - CVE-2026-1327
Totolink NR1800X POST Request cstecgi.cgi setTracerouteCfg c - CVE-2026-1326
Totolink NR1800X POST Request cstecgi.cgi setWanCfg command
Same vendor: Totolink
- CVE-2026-8137
Totolink X5000R formDdns sub_458E40 buffer overflow - CVE-2026-7823
Totolink A8000RU cstecgi.cgi setAppFilterCfg os command inje - CVE-2026-7750
Totolink N300RH POST Request cstecgi.cgi setMacFilterRules b - CVE-2026-7749
Totolink N300RH POST Request cstecgi.cgi setWanConfig buffer - CVE-2026-7748
Totolink N300RH POST Request cstecgi.cgi setUpgradeFW buffer
Same weakness: CWE-77
- CVE-2026-8210
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LiteLLM: Authenticated command execution via MCP stdio test - CVE-2026-41500
electerm has Command Injection Vulnerability via runMac func
V. Comments for CVE-2026-7548
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