CVE-2025-9934
Published: 04 September 2025
Summary
CVE-2025-9934 is a medium-severity Injection (CWE-74) vulnerability in Totolink X5000R 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 15.6% 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 CGI (/cgi-bin/cstecgi.cgi) via 'pid' parameter enables initial access through exploitation of public-facing application (T1190), indirect command execution via the CGI process (T1202), and Unix shell command execution (T1059.004).
NVD Description
A vulnerability was found in TOTOLINK X5000R 9.1.0cu.2415_B20250515. This affects the function sub_410C34 of the file /cgi-bin/cstecgi.cgi. Performing manipulation of the argument pid results in command injection. Remote exploitation of the attack is possible. The exploit has been made public…
more
and could be used.
Deeper analysisAI
CVE-2025-9934 is a command injection vulnerability affecting the TOTOLINK X5000R router on firmware version 9.1.0cu.2415_B20250515. The flaw exists in the sub_410C34 function of the /cgi-bin/cstecgi.cgi file, where manipulation of the pid argument enables command injection. Published on 2025-09-04, it 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 maps to CWE-74 and CWE-77.
A remote attacker with low privileges can exploit this vulnerability over the network with low attack complexity and without requiring user interaction. Exploitation allows limited impacts on confidentiality, integrity, and availability, potentially enabling arbitrary command execution on the device.
Advisories referenced in VulDB (ctiid.322336, id.322336, submit.643048) and a GitHub repository detail the vulnerability, including a proof-of-concept exploit. No specific patches or mitigations are mentioned in the available information.
The exploit has been made public, facilitating potential remote exploitation.
Details
- CWE(s)