# CVE-2026-94952: TOTOLINK N150RT stack-based buffer overflow in web management

Source: https://junglewise.ai/threats/cve-2026-94952-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-2026-94952 · Severity: info · Published 2026-09-29

TOTOLINK N150RT routers contain a stack-based buffer overflow in the web management interface that allows authenticated attackers to crash the router or potentially execute arbitrary code. An attacker with valid router credentials can send a specially crafted request to the port-forwarding configuration handler to overflow the web server's memory, causing denial of service or remote code execution with root privileges.

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

## Quick answers

**Is CVE-2026-94952 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-94952 being exploited in the wild.

**How severe is CVE-2026-94952?** Informational severity, published 29 September 2026.

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

**Is there a fix for CVE-2026-94952?** 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-2026-94952 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-94952?** 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

The vulnerability is a classic unbounded sprintf() buffer overflow in the /boafrm/formPortFw handler (bin/boa sub_4156B0). When the addPortFw parameter is set, user-controlled ip_subnet and fw_ip parameters are concatenated into a fixed 32-byte stack buffer without length validation, allowing attackers to write 2000+ bytes past the buffer boundary. The subsequent inet_aton() call provides no mitigation as it operates on the already-corrupted stack; exploitation requires authenticated access via POST request with combined payload exceeding 31 bytes.

## Affected products

- TOTOLINK N150RT V3.4.0-B20201030

## Timeline

- 2026-09-29: disclosed

## References

- [https://gist.github.com/H3rmesk1t/0f2e6a120c92a37282779516b7e93e03](https://gist.github.com/H3rmesk1t/0f2e6a120c92a37282779516b7e93e03)

## Related threats

- [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 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)