CVE-2026-16331 D-Link DNS-320 save_ajax.php unrestricted upload
Remote attackers can upload malicious files via save_ajax.php on D-Link DNS-320 devices, potentially leading to code execution.
- 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-2026-16331?
CVE-2026-16331 is a medium-severity vulnerability in D-Link DNS-320, published on 21 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A security vulnerability has been detected in D-Link DNS-320 1.0.2. This affects an unknown function of the file /web/function/save_ajax.php. Such manipulation of the argument Malicious Handler leads to unrestricted upload. The attack can be executed remotely. The exploit has been disclosed publicly and may be used.
Which versions are affected by CVE-2026-16331?
How do I fix CVE-2026-16331?
No fix has been published for CVE-2026-16331 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-16331 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-16331 exists.
Sources
Also known as GHSA-hfvv-f4x9-469c.