Is CVE-2026-105286 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-105286 being exploited in the wild.

How severe is CVE-2026-105286?

Medium severity, with a CVSS score of 6.3, published 5 October 2026.

Which products and versions are affected?

TOTOLINK A3002MU 1.0.0-B20230403.1455.

Is there a fix for CVE-2026-105286?

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-2026-105286 attacked?

It is attacked over the network, in device firmware.

Am I affected by CVE-2026-105286?

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.

CVE-2026-105286: Totolink A3002MU path traversal in file upload handler

CVE-2026-105286 · Severity: medium · CVSS 6.3 · Published 2026-10-05

The Totolink A3002MU router's web-based file upload feature does not validate file paths, allowing an attacker to write arbitrary files to the device's web root and overwrite system files. An unauthenticated remote attacker can exploit this to inject malicious content, phish for administrator credentials, execute code as root, or persistently deface the device.

Technologies: TOTOLINK A3002MU. Vendors: TOTOLINK.

Quick answers

Is CVE-2026-105286 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-105286 being exploited in the wild.
How severe is CVE-2026-105286?: Medium severity, with a CVSS score of 6.3, published 5 October 2026.
Which products and versions are affected?: TOTOLINK A3002MU 1.0.0-B20230403.1455.
Is there a fix for CVE-2026-105286?: 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-2026-105286 attacked?: It is attacked over the network, in device firmware.
Am I affected by CVE-2026-105286?: 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 path traversal vulnerability in the /boafrm/formUploadFile handler extracts the filename attribute from multipart upload requests without filtering ".." or "/" characters, then concatenates it directly into the destination path /var/web/fw/<product>/<filename>. The handler runs as root and permits writing arbitrary bytes after a minimal container structure, giving attackers full control over file path and content. No authentication is required.

Affected products

Totolink A3002MU 1.0.0-B20230403.1455

Timeline

2026-09-14: disclosed
2026-10-05: advisory

References

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