CVE-2025-28034 Command injection in n/a

Critical 9.8 Published 22 Apr 2025 Updated 23 Apr 2025

Attackers can execute arbitrary commands remotely on TOTOLINK routers via the NTPSyncWithHost function without authentication.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-28034?

CVE-2025-28034 is a critical command injection vulnerability in n/a, published on 22 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

TOTOLINK A800R V4.1.2cu.5137_B20200730, A810R V4.1.2cu.5182_B20201026, A830R V4.1.2cu.5182_B20201102, A950RG V4.1.2cu.5161_B20200903, A3000RU V5.9c.5185_B20201128, and A3100R V4.1.2cu.5247_B20211129 were found to contain a pre-auth remote command execution vulnerability in the NTPSyncWithHost function through the hostTime parameter.

Weakness: CWE-78

Which versions are affected by CVE-2025-28034?

It affects 6 products.

Products include Totolink A3000ru Firmware, Totolink A3100r Firmware, Totolink A800r Firmware, Totolink A810r Firmware, Totolink A830r Firmware, Totolink A950rg Firmware.

How do I fix CVE-2025-28034?

No fix has been published for CVE-2025-28034 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2025-28034 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-28034 exists.

Sources

Also known as GHSA-p2gm-m8q4-6r5q.