Is CVE-2026-15480 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-15480 being exploited in the wild.

How severe is CVE-2026-15480?

High severity, with a CVSS score of 8.8, published 12 July 2026.

Is there a fix for CVE-2026-15480?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-15480 attacked?

It is attacked over the network, in an operating system.

Am I affected by CVE-2026-15480?

Check whether you run TRENDnet TEW-635BRM at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-15480: Trendnet TEW-635BRM stack overflow in start_httpd

CVE-2026-15480 · Severity: high · CVSS 8.8 · Published 2026-07-12

A vulnerability exists in the Trendnet TEW-635BRM router, a device used to provide internet connectivity and networking for homes and small offices. An attacker can exploit this flaw to crash the router's web management interface or potentially take full control of the device. Because this product reached its end-of-life in 2011, the manufacturer is not providing a security patch, and users are advised to replace the hardware with a supported model.

Vendors: TRENDnet.

Quick answers

Is CVE-2026-15480 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-15480 being exploited in the wild.
How severe is CVE-2026-15480?: High severity, with a CVSS score of 8.8, published 12 July 2026.
Which products and versions are affected?: TRENDnet TEW-635BRM 1.00.03.
Is there a fix for CVE-2026-15480?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-15480 attacked?: It is attacked over the network, in an operating system.
Am I affected by CVE-2026-15480?: Check whether you run TRENDnet TEW-635BRM at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A stack-based buffer overflow exists in the 'start_httpd' function within the '/sbin/rc' binary of the Trendnet TEW-635BRM router (firmware v1.00.03). The vulnerability is caused by the unsafe use of 'strcpy()' when retrieving the 'device_name' and 'http_realm' NVRAM variables, which are copied into a fixed-size 126-byte stack buffer without length validation. An attacker with the ability to modify NVRAM settings (e.g., via the web interface) can provide a payload exceeding 136 bytes to overwrite the saved return address ($ra). This can lead to a crash of the mini_httpd service or remote code execution (RCE). The vendor has stated the device is EOL and will not be patched.

Affected products

Trendnet TEW-635BRM 1.00.03

Timeline

2011: other: Product reached End-of-Life (EOL) status
2026-07-12: disclosed: Vulnerability details and PoC published
2026-07-12: advisory: CVE-2026-15480 published

References

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