CVE-2026-90692 D-Link DIR-878 Dynamic DNS IPv6 Settings SetDynamicDNSIPv6Settings stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the Dynamic DNS IPv6 settings, potentially leading to arbitrary code execution on D-Link DIR-878 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-2026-90692?
CVE-2026-90692 is a critical memory corruption vulnerability in D-Link DIR-878, published on 14 Sep 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 DIR-878 120B05. This affects the function SetDynamicDNSIPv6Settings of the component Dynamic DNS IPv6 Settings. The manipulation of the argument IPv6Address/Hostname results in stack-based buffer overflow. The attack may be launched remotely.
Which versions are affected by CVE-2026-90692?
How do I fix CVE-2026-90692?
No fix has been published for CVE-2026-90692 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-90692 being exploited?
There is no known exploitation of CVE-2026-90692 in the wild and no public exploit code.
Sources
Also known as GHSA-vmqq-69gc-qcmg.