CVE-2025-7524
Published: 13 July 2025
Summary
CVE-2025-7524 is a medium-severity Injection (CWE-74) vulnerability in Totolink T6 Firmware. Its CVSS base score is 6.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 10.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Developer assessments and testing (including injection-focused techniques) identify improper neutralization of special elements, and the verifiable flaw remediation corrects them pre-deployment.
Identifies indicators of injection attacks (command, SQL, LDAP, etc.) via anomaly and attack monitoring.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Command injection in public-facing router web CGI (/cgi-bin/cstecgi.cgi) enables exploitation of public-facing applications (T1190) and arbitrary Unix shell command execution (T1059.004).
NVD Description
A vulnerability was found in TOTOLINK T6 4.1.5cu.748_B20211015. It has been classified as critical. This affects the function setDiagnosisCfg of the file /cgi-bin/cstecgi.cgi of the component HTTP POST Request Handler. The manipulation of the argument ip leads to command injection.…
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It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.
Deeper analysisAI
CVE-2025-7524 is a command injection vulnerability affecting the TOTOLINK T6 router running firmware version 4.1.5cu.748_B20211015. The issue resides in the setDiagnosisCfg function within the /cgi-bin/cstecgi.cgi file, part of the HTTP POST Request Handler component. By manipulating the "ip" argument in an HTTP POST request, an attacker can inject arbitrary commands, as classified under CWE-74 and CWE-77. The vulnerability carries a CVSS v3.1 base score of 6.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L) and was published on 2025-07-13.
The vulnerability can be exploited remotely over the network with low complexity by an attacker possessing low privileges (PR:L), requiring no user interaction. Successful exploitation enables limited impacts including low confidentiality, integrity, and availability effects through command injection, potentially allowing execution of arbitrary system commands on the affected device.
References include proof-of-concept details published on GitHub at https://github.com/ElvisBlue/Public/blob/main/Vuln/2.md and https://github.com/ElvisBlue/Public/blob/main/Vuln/2.md#poc, along with VulDB entries at https://vuldb.com/?ctiid.316221, https://vuldb.com/?id.316221, and https://vuldb.com/?submit.612935, confirming the exploit has been publicly disclosed and may be actively used. No specific patch or mitigation details are outlined in the available information.
Details
- CWE(s)