CVE-2025-11121
Published: 28 September 2025
Summary
CVE-2025-11121 is a medium-severity Injection (CWE-74) vulnerability in Tenda Ac18 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 37.7% 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?
The unauthenticated remote command injection vulnerability in the /goform/AdvSetLanip web endpoint of the Tenda AC18 router enables exploitation of a public-facing application (T1190), abuse of command and scripting interpreters via injected OS commands (T1059), and indirect command execution (T1202, as mapped by VulDB).
NVD Description
A security vulnerability has been detected in Tenda AC18 15.03.05.19. The impacted element is an unknown function of the file /goform/AdvSetLanip. The manipulation of the argument lanIp leads to command injection. The attack can be initiated remotely. The exploit has…
more
been disclosed publicly and may be used.
Deeper analysisAI
CVE-2025-11121 is a command injection vulnerability affecting the Tenda AC18 router on firmware version 15.03.05.19. The flaw resides in an unknown function within the /goform/AdvSetLanip file, where manipulation of the lanIp argument enables command injection. Published on 2025-09-28, it is associated with CWE-74 and CWE-77, and 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).
The vulnerability is exploitable remotely by attackers possessing low privileges, such as authenticated users with access to the affected endpoint. Exploitation requires low complexity and no user interaction, allowing attackers to inject and execute arbitrary commands on the device, resulting in limited impacts to confidentiality, integrity, and availability.
References include a public exploit disclosure on GitHub (https://github.com/noahze01/IoT-vulnerable/blob/main/Tenda/AC18/AdvSetLanip.md) and VulDB entries (https://vuldb.com/?ctiid.326202, https://vuldb.com/?id.326202, https://vuldb.com/?submit.664191), which note that the exploit may be used. The vendor site (https://www.tenda.com.cn/) is referenced, though specific mitigation or patch details are not outlined in the available information.
Details
- CWE(s)