PatchSiren cyber security CVE debrief
CVE-2026-15481 Trendnet CVE debrief
A command injection vulnerability has been discovered in Trendnet TEW-635BRM up to 1.00.03. The vulnerability affects the function ipoa_test of the file /sbin/rc of the component IPoA WAN Connection Setup. Performing a manipulation of the argument ipoa_ipaddr results in command injection. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. The vendor explains: 'We are unable to confirm if the vulnerability exists. This item has been EOL since 2011. We will make an official announcement of possible vulnerabilities, and recommend users to switch devices.'
- Vendor
- Trendnet
- Product
- TEW-635BRM
- CVSS
- HIGH 7.4
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-07-12
- Original CVE updated
- 2026-07-12
- Advisory published
- 2026-07-12
- Advisory updated
- 2026-07-12
Who should care
Security teams and administrators responsible for Trendnet TEW-635BRM devices should be aware of this vulnerability. Given that the device has reached end-of-life (EOL) since 2011, users are recommended to switch devices to mitigate potential risks.
Technical summary
The vulnerability is caused by a lack of proper input validation in the ipoa_test function of the /sbin/rc file, which is part of the IPoA WAN Connection Setup component. An attacker can exploit this vulnerability by manipulating the ipoa_ipaddr argument, leading to command injection. The vulnerability has a CVSS score of 7.4 and is classified as HIGH severity. Trendnet TEW-635BRM devices, especially those exposed to the internet or untrusted networks, should be given high priority. Given the device's EOL status since 2011, immediate mitigation or replacement is recommended. Users are advised to switch devices as the vendor is unable to confirm if the vulnerability exists but recommends this action due to the product's end-of-life status.
Defensive priority
High priority should be given to Trendnet TEW-635BRM devices, especially those exposed to the internet or untrusted networks. Given the device's EOL status, immediate mitigation or replacement is recommended.
Recommended defensive actions
- Inventory and identify all Trendnet TEW-635BRM devices in your environment.
- Isolate affected devices from the internet or untrusted networks.
- Consider replacing Trendnet TEW-635BRM devices with supported alternatives.
- Monitor for any suspicious activity or exploit attempts targeting this vulnerability.
- Implement compensating controls, such as network segmentation or access controls, to reduce the attack surface.
Evidence notes
The CVE record was published on 2026-07-12T06:16:42.863Z and has not been modified since then. The NVD entry is currently Received. The vulnerability has been publicly disclosed, and an exploit has been released. However, the vendor is unable to confirm if the vulnerability exists and recommends users to switch devices due to the EOL status of the product.
Official resources
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-12T06:16:42.863Z and has not been modified since then. The NVD entry is currently Received.