# CVE-2026-94954: TOTOLINK N150RT stack-based buffer overflow in web management

Source: https://junglewise.ai/threats/cve-2026-94954-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-2026-94954 · Severity: info · Published 2026-09-29

TOTOLINK N150RT is a home/small office router whose web management interface contains a critical buffer overflow in the URL filtering configuration handler. An authenticated attacker can crash the web server or potentially execute arbitrary code with root privileges by sending a malicious request with an oversized URL parameter.

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

## Quick answers

**Is CVE-2026-94954 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-94954 being exploited in the wild.

**How severe is CVE-2026-94954?** Informational severity, published 29 September 2026.

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

**Is there a fix for CVE-2026-94954?** 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-2026-94954 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-94954?** 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/formFilter handler of the boa web server when the addFilterUrl or addFilterUrlFlag action is set. The url parameter is copied via unbounded strcpy() into a 36-byte stack buffer with no length validation; payloads exceeding ~35 bytes overflow adjacent stack memory and payloads ≥1000 bytes overwrite callee-saved MIPS registers, causing a denial of service or enabling RCE. Attack requires authentication (POST /boafrm/formLogin session) and network access to the web interface; no user interaction needed.

## Affected products

- TOTOLINK N150RT V3.4.0-B20201030

## Timeline

- 2026-09-29: disclosed

## References

- [https://gist.github.com/H3rmesk1t/9e4bc190ee8130a3df5863c1c047766b](https://gist.github.com/H3rmesk1t/9e4bc190ee8130a3df5863c1c047766b)

## 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-2026-94953-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)