CVE-2026-15271 TOTOLINK EX200 Web boa.conf least privilege violation

High 7.7 Published Updated

Remote attackers can exploit a least privilege violation in the web interface configuration to escalate privileges on affected TOTOLINK routers.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-15271?

CVE-2026-15271 is a high-severity vulnerability in TOTOLINK A3000RU, published on 9 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A security vulnerability has been detected in TOTOLINK A3000RU, A3100R, A950RG, AC1200T10, CP450, CS185R_T10 and EX200 up to 20260906. Affected by this issue is some unknown functionality of the file /etc/boa/boa.conf of the component Web Interface. The manipulation leads to least privilege violation. The attack may be initiated remotely. The attack's complexity is rated as high. The exploitation is known to be difficult.

Weakness: CWE-272, CWE-266

Which versions are affected by CVE-2026-15271?

How do I fix CVE-2026-15271?

No fix has been published for CVE-2026-15271 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-15271 being exploited?

There is no known exploitation of CVE-2026-15271 in the wild and no public exploit code.

Sources

Also known as GHSA-f8vj-vmgj-67x6.

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