CVE-2026-6560 H3C Magic B0 aspForm Edit_BasicSSID buffer overflow
Remote attackers can trigger a buffer overflow in the Edit_BasicSSID function of H3C Magic B0 routers, 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-2026-6560?
CVE-2026-6560 is a high-severity memory corruption vulnerability in H3C Magic B0, published on 19 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A security vulnerability has been detected in H3C Magic B0 up to 100R002. This vulnerability affects the function Edit_BasicSSID of the file /goform/aspForm. Such manipulation of the argument param leads to buffer overflow. The attack can be executed remotely. The exploit has been disclosed publicly 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-2026-6560?
How do I fix CVE-2026-6560?
No fix has been published for CVE-2026-6560 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-2026-6560 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6560 exists.
Sources
Also known as GHSA-m9r6-cg89-ghg2.