CVE-2025-4851— TOTOLINK N300RH cstecgi.cgi setUploadUserData command injection
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I. Basic Information for CVE-2025-4851
Vulnerability Information
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Vulnerability Title
TOTOLINK N300RH cstecgi.cgi setUploadUserData command injection
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability classified as critical was found in TOTOLINK N300RH 6.1c.1390_B20191101. This vulnerability affects the function setUploadUserData of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument FileName leads to command injection. The attack can be initiated remotely. The exploit has been disclosed to the 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:L/I:L/A:L
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 N300RH 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK N300RH是中国吉翁电子（TOTOLINK）公司的一款长距离无线路由器。 TOTOLINK N300RH 6.1c.1390_B20191101版本存在注入漏洞，该漏洞源于对文件/cgi-bin/cstecgi.cgi中参数FileName的错误操作导致命令注入。
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-2025-4851
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Same Patch Batch · TOTOLINK · 2025-05-18 · 4 CVEs total
| CVE-2025-4850 | 6.3 MEDIUM | TOTOLINK N300RH cstecgi.cgi setUnloadUserData command injection |
| CVE-2025-4849 | 6.3 MEDIUM | TOTOLINK N300RH cstecgi.cgi CloudACMunualUpdateUserdata command injection |
| CVE-2025-4852 | 2.4 LOW | TOTOLINK A3002R VPN Page cross site scripting |
IV. Related Vulnerabilities
Same product: N300RH
- 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 - CVE-2026-7747
Totolink N300RH Parameter cstecgi.cgi loginauth buffer overf - CVE-2026-7633
Totolink N300RH cstecgi.cgi setUploadSetting file inclusion
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
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aandrew-me tgpt Update helper.go helper.Update command injec - CVE-2026-42258
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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-2025-4851
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