# CVE-2026-93741: Totolink A3002MU buffer overflow in formWlWds

Source: https://junglewise.ai/threats/cve-2026-93741-a-security-flaw-has-been-discovered-in-totolink-a3002mu-hh  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-19. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-93741 · Severity: critical · CVSS 10 · Published 2026-09-19

The Totolink A3002MU wireless router contains a buffer overflow vulnerability in its web administration interface. A remote attacker can send a malicious HTTP request to the /boafrm/formWlWds endpoint to crash the router's web server, causing denial of service. The vulnerability could potentially lead to arbitrary code execution, allowing an attacker to take complete control of the device and the network it protects.

Technologies: [TOTOLINK A3002MU](https://junglewise.ai/threats/technologies/a3002mu). Vendors: [TOTOLINK](https://junglewise.ai/threats/vendors/totolink).

## Quick answers

**Is CVE-2026-93741 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-93741 being exploited in the wild.

**How severe is CVE-2026-93741?** Critical severity, with a CVSS score of 10, published 19 September 2026.

**Which products and versions are affected?** TOTOLINK A3002MU Hh-B20211125.1046.

**Is there a fix for CVE-2026-93741?** 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-2026-93741 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-93741?** Check whether you run TOTOLINK A3002MU 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 buffer overflow exists in the formWlWds function of the Totolink A3002MU's web server (/bin/boa) due to unsafe handling of the submit-url parameter. The vulnerable code copies user-controlled input into a fixed-size buffer without proper length validation. An attacker can send a POST request with an excessively long submit-url value to overflow the buffer, causing memory corruption and crashing the web server process (DoS), with potential for code execution.

## Affected products

- Totolink A3002MU Hh-B20211125.1046

## Timeline

- 2026-09-19: disclosed

## References

- [https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A3002MU/bof-formWlWds.md](https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A3002MU/bof-formWlWds.md)
- [https://vuldb.com/cve/CVE-2026-93741](https://vuldb.com/cve/CVE-2026-93741)

## Related threats

- [Totolink A3002MU path traversal in file upload handler](https://junglewise.ai/threats/cve-2026-105286-a-vulnerability-was-detected-in-totolink-a3002mu-1-0-0-b20230403)
- [Totolink A3002MU stack buffer overflow in QoS handler](https://junglewise.ai/threats/cve-2026-105285-a-security-vulnerability-has-been-detected-in-totolink-a3002mu-1)
- [Totolink A3002MU authentication bypass in bin/boa](https://junglewise.ai/threats/cve-2026-105284-a-weakness-has-been-identified-in-totolink-a3002mu-1-0-0)
- [Totolink A3002MU command injection in formWsc](https://junglewise.ai/threats/cve-2026-93742-a-weakness-has-been-identified-in-totolink-a3002mu-hh-b20211125)
- [Totolink A3002MU buffer overflow in formWlEncrypt](https://junglewise.ai/threats/cve-2026-93740-a-vulnerability-was-identified-in-totolink-a3002mu-hh-b20211125)