# CVE-2026-94953: TOTOLINK N150RT stack-based buffer overflow in web management

Source: https://junglewise.ai/threats/cve-2026-94953-a-stack-based-buffer-overflow-vulnerability-exists-in-the-web  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-29. Updated: 2026-09-29  
License: CC BY 4.0 with a link back

CVE-2026-94953 · Severity: info · Published 2026-09-29

The TOTOLINK N150RT wireless router's web management interface contains a stack buffer overflow in its WiFi repeater configuration endpoint. An authenticated attacker can send a specially crafted request with an oversized WEP encryption key to crash the web server (denial of service) or potentially execute arbitrary code with root privileges on the device.

Technologies: [TOTOLINK N150RT](https://junglewise.ai/threats/technologies/n150rt). Vendors: [TOTOLINK](https://junglewise.ai/threats/vendors/totolink).

## Quick answers

**Is CVE-2026-94953 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-94953 being exploited in the wild.

**How severe is CVE-2026-94953?** Informational severity, published 29 September 2026.

**Which products and versions are affected?** TOTOLINK N150RT V3.4.0-B20201030.

**Is there a fix for CVE-2026-94953?** 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-2026-94953 attacked?** It is attacked over the network, in device firmware.

**Am I affected by CVE-2026-94953?** Check whether you run TOTOLINK N150RT 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 (CWE-121) exists in the /boafrm/formAjaxSet JSON API handler when processing the ApCliWEPKey field in the setWiFiRepeaterConfig branch. The vulnerable code uses unbounded strcpy() to copy user-supplied JSON input into a 68-byte stack buffer without length validation, allowing payloads over 67 bytes to overflow. Authentication is required; exploitation in emulation confirmed device crash at 3000-byte payload, with potential for controlled code execution on the root-privileged boa web server process.

## Affected products

- TOTOLINK N150RT V3.4.0-B20201030

## Timeline

- 2026-09-29: disclosed

## References

- [https://gist.github.com/H3rmesk1t/039c2c968fd535cfffecdf9626e963e2](https://gist.github.com/H3rmesk1t/039c2c968fd535cfffecdf9626e963e2)

## Related threats

- [TOTOLINK N150RT stack-based buffer overflow in web management](https://junglewise.ai/threats/cve-2026-94952-a-stack-based-buffer-overflow-vulnerability-exists-in-the-web)
- [TOTOLINK N150RT stack-based buffer overflow in web management](https://junglewise.ai/threats/cve-2026-94954-a-stack-based-buffer-overflow-vulnerability-exists-in-the-web)
- [TOTOLINK N150RT OS command injection in web management interface](https://junglewise.ai/threats/cve-2026-100896-a-weakness-has-been-identified-in-totolink-n150rt-3-4-0)