CVE-2025-5156 H3C GR-5400AX aspForm EditWlanMacList buffer overflow
Remote attackers can trigger a buffer overflow in the H3C GR-5400AX router's WLAN MAC list editor, potentially leading to code execution or service disruption.
- 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-2025-5156?
CVE-2025-5156 is a high-severity memory corruption vulnerability in H3C GR-5400AX, published on 25 May 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was found in H3C GR-5400AX up to 100R008 and classified as critical. Affected by this issue is the function EditWlanMacList of the file /routing/goform/aspForm. The manipulation of the argument param leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2025-5156?
It affects 1 product.
Products include H3c Gr-5400ax Firmware.
How do I fix CVE-2025-5156?
No fix has been published for CVE-2025-5156 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-2025-5156 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-5156 exists.
Sources
Also known as GHSA-p84j-ggc3-5x2h.