CVE-2026-4188 D-Link DIR-619L boa formSchedule stack-based overflow
Remote attackers can exploit a stack-based buffer overflow in the D-Link DIR-619L router to execute arbitrary code, affecting unsupported 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-2026-4188?
CVE-2026-4188 is a high-severity memory corruption vulnerability in D-Link DIR-619L, published on 15 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A security flaw has been discovered in D-Link DIR-619L 2.06B01. The affected element is the function formSchedule of the file /goform/formSchedule of the component boa. Performing a manipulation of the argument curTime results in stack-based buffer overflow. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. This vulnerability only affects products that are no longer supported by the maintainer.
Which versions are affected by CVE-2026-4188?
How do I fix CVE-2026-4188?
No fix has been published for CVE-2026-4188 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-2026-4188 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-4188 exists.
Sources
Also known as GHSA-26g8-pm8g-xfh3.