CVE-2026-82689 D-Link DNS-320L/DNS-327L/DNS-340L/DNS-345 ISO Image isomount_mgr.cgi os command injection
Remote attackers can execute arbitrary OS commands via the upIsoRootPath argument in the ISO Image Handler CGI script on affected D-Link NAS devices.
- 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-2026-82689?
CVE-2026-82689 is a critical command injection vulnerability in D-Link DNS-320L, published on 31 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was detected in D-Link DNS-320L, DNS-327L, DNS-340L and DNS-345 up to 20260717. Affected is an unknown function of the file /cgi-bin/isomount_mgr.cgi of the component ISO Image Handler. The manipulation of the argument upIsoRootPath results in os command injection. The attack can be executed remotely. The exploit is now public and may be used.
Which versions are affected by CVE-2026-82689?
How do I fix CVE-2026-82689?
No fix has been published for CVE-2026-82689 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-2026-82689 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82689 exists.
Sources
Also known as GHSA-48gx-r96g-wf4f.