CVE-2026-82593 D-Link DIR-825M LTE Module Firmware Upgrade formLtefotaUpgradeFibocom sub_41802C stack-based overflow
A remote attacker can trigger a stack-based buffer overflow in the LTE firmware upgrade module to execute arbitrary code on the device.
- 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-2026-82593?
CVE-2026-82593 is a critical memory corruption vulnerability in D-Link DIR-825M, published on 30 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A flaw has been found in D-Link DIR-825M 1.1.8. This impacts the function sub_41802C of the file /boafrm/formLtefotaUpgradeFibocom of the component LTE Module Firmware Upgrade. This manipulation of the argument fota_url causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been published and may be used.
Which versions are affected by CVE-2026-82593?
How do I fix CVE-2026-82593?
No fix has been published for CVE-2026-82593 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-2026-82593 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82593 exists.
Sources
Also known as GHSA-hcq5-x562-2jwm.