CVE-2025-7460
Published: 11 July 2025
Summary
CVE-2025-7460 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Totolink T6 Firmware. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 19.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-16 (Memory Protection).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Validates and sanitizes the 'mac' argument in HTTP POST requests to the setWiFiAclRules function, directly preventing the buffer overflow vulnerability.
Enforces memory protections like address space layout randomization and non-executable stacks to block exploitation of the buffer overflow for arbitrary code execution.
Mandates timely flaw remediation through firmware patching for the specific buffer overflow in TOTOLINK T6 version 4.1.5cu.748_B20211015.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Buffer overflow in the public-facing web interface (/cgi-bin/cstecgi.cgi) of the TOTOLINK T6 router enables remote exploitation of a public-facing application for potential remote code execution.
NVD Description
A vulnerability has been found in TOTOLINK T6 4.1.5cu.748_B20211015 and classified as critical. Affected by this vulnerability is the function setWiFiAclRules of the file /cgi-bin/cstecgi.cgi of the component HTTP POST Request Handler. The manipulation of the argument mac leads to…
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buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.
Deeper analysisAI
CVE-2025-7460 is a critical buffer overflow vulnerability (CWE-119, CWE-120) in the TOTOLINK T6 router firmware version 4.1.5cu.748_B20211015. The flaw affects the setWiFiAclRules function within the /cgi-bin/cstecgi.cgi file, which is part of the HTTP POST Request Handler component. It is triggered by manipulating the mac argument in a request.
The vulnerability carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating it can be exploited remotely over the network with low complexity and low privileges required, without user interaction. An attacker with such access could achieve high impacts on confidentiality, integrity, and availability, potentially leading to arbitrary code execution or system crashes via the buffer overflow.
Advisories and references, including VulDB entries (ctiid.316111, id.316111, submit.609819) and a GitHub repository, document the issue but do not specify patches or mitigations. The GitHub page includes a proof-of-concept exploit.
The exploit has been publicly disclosed, enabling potential immediate use by attackers.
Details
- CWE(s)