# CVE-2026-105284: Totolink A3002MU authentication bypass in bin/boa

Source: https://junglewise.ai/threats/cve-2026-105284-a-weakness-has-been-identified-in-totolink-a3002mu-1-0-0  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-05. Updated: 2026-10-05  
License: CC BY 4.0 with a link back

CVE-2026-105284 · Severity: critical · CVSS 10 · Published 2026-10-05

The Totolik A3002MU router's web administration interface contains an authentication bypass flaw that allows unauthenticated attackers to access all 67 configuration handlers without credentials. An attacker on the network can manipulate router settings, upload firmware, export configuration, manage firewall rules, and execute diagnostic commands, leading to complete compromise of the device.

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

## Quick answers

**Is CVE-2026-105284 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-105284 being exploited in the wild.

**How severe is CVE-2026-105284?** Critical severity, with a CVSS score of 10, published 5 October 2026.

**Which products and versions are affected?** TOTOLINK A3002MU 1.0.0-B20230403.1455.

**Is there a fix for CVE-2026-105284?** 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-2026-105284 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-105284?** 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

The vulnerability exists in the bin/boa HTTP daemon's authentication gate function (sub_40FCFC), which implements fail-open authorization by comparing the client's IP against a stored login IP only for token validation. The gate incorrectly accepts requests when the session token buffer (cleared via memset) is empty, which is true for all clients except the one stored login IP, allowing pre-authentication access to all 67 handlers including firmware upload, configuration export, and firewall management.

## Affected products

- Totolink A3002MU 1.0.0-B20230403.1455

## Timeline

- 2026-10-05: disclosed
- exploited: Exploit published publicly via GitHub Gist

## References

- [https://gist.github.com/H3rmesk1t/ac6e91a8fba51002be085755c8bf7d43](https://gist.github.com/H3rmesk1t/ac6e91a8fba51002be085755c8bf7d43)
- [https://vuldb.com/cve/CVE-2026-105284](https://vuldb.com/cve/CVE-2026-105284)

## 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 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 formWlWds](https://junglewise.ai/threats/cve-2026-93741-a-security-flaw-has-been-discovered-in-totolink-a3002mu-hh)
- [Totolink A3002MU buffer overflow in formWlEncrypt](https://junglewise.ai/threats/cve-2026-93740-a-vulnerability-was-identified-in-totolink-a3002mu-hh-b20211125)