CVE-2026-7721 Totolink WA300 cstecgi.cgi NTPSyncWithHost command injection
Remote attackers can execute arbitrary commands on Totolink WA300 routers via the NTPSyncWithHost function in cstecgi.cgi.
- 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-2026-7721?
CVE-2026-7721 is a medium-severity command injection vulnerability in Totolink WA300, published on 4 May 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 WA300 5.2cu.7112_B20190227. This affects the function NTPSyncWithHost of the file /cgi-bin/cstecgi.cgi. Such manipulation of the argument hostTime leads to command injection. The attack can be executed remotely. The exploit has been disclosed publicly and may be used.
Which versions are affected by CVE-2026-7721?
How do I fix CVE-2026-7721?
No fix has been published for CVE-2026-7721 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-2026-7721 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7721 exists.
Sources
Also known as GHSA-6w4f-g875-v59m.