CVE-2026-7538— Totolink A8000RU CGI cstecgi.cgi vulnerability os command injection
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-7538
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Totolink A8000RU CGI cstecgi.cgi vulnerability os command injection
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was identified in Totolink A8000RU 7.1cu.643_b20200521. This issue affects the function Vulnerability of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument proto leads to os command injection. The attack may be initiated remotely. The exploit is publicly available and might be used.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
Vulnerability Title
TOTOLINK A8000RU 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK A8000RU是中国吉翁电子（TOTOLINK）公司的一款无线路由器。 TOTOLINK A8000RU 7.1cu.643_b20200521版本存在命令注入漏洞，该漏洞源于CGI Handler组件文件/cgi-bin/cstecgi.cgi中未知功能对参数proto的操作，可能导致OS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)
Shenlong Deep Dive — AI Deep Analysis
10-question deep dive: root cause, exploitation, mitigation, urgency. Read summary free, full version requires login.
Affected Products
II. Public POCs for CVE-2026-7538
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCVerified env Premium
claude_code · 3520 chars
Paid plan includes:
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month
III. Intelligence Information for CVE-2026-7538
请登录查看更多情报信息。
- CVE-2026-7538 | Totolink A8000RU 7.1cu.643_b20200521 CGI /cgi-bin/cstecgi.cgi vulnerability proto os command injectionvdb-entrytechnical-description
- https://nvd.nist.gov/vuln/detail/CVE-2026-7538
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-2026-7548 | 8.8 HIGH | Totolink NR1800X cstecgi.cgi sub_41A68C command injection |
IV. Related Vulnerabilities
Same product: A8000RU
- CVE-2026-7823
Totolink A8000RU cstecgi.cgi setAppFilterCfg os command inje - CVE-2026-7244
Totolink A8000RU CGI cstecgi.cgi setWiFiEasyGuestCfg os comm - CVE-2026-7243
Totolink A8000RU CGI cstecgi.cgi setRadvdCfg os command inje - CVE-2026-7242
Totolink A8000RU CGI cstecgi.cgi setOpenVpnClientCfg os comm - CVE-2026-7241
Totolink A8000RU CGI cstecgi.cgi setWiFiBasicCfg os 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-78
- CVE-2026-8273
D-Link DNS-320 system_mgr.cgi cgi_merge_user os command inje - CVE-2026-8272
D-Link DNS-320 webfile_mgr.cgi chown os command injection - CVE-2026-8271
D-Link DNS-320 network_mgr.cgi cgi_upnp_edit os command inje - CVE-2026-8265
Tenda AC6 httpd getLogFile get_log_file os command injection - CVE-2026-8264
Tenda AC6 httpd WifiApScan formWifiApScan os command injecti
V. Comments for CVE-2026-7538
No comments yet