CVE-2026-10259 H3C Magic B0 aspForm SetMobileAPInfoById stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the H3C Magic B0 router's SetMobileAPInfoById function, potentially leading to code execution.
- 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-2026-10259?
CVE-2026-10259 is a high-severity memory corruption vulnerability in H3C Magic B0, published on 1 Jun 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. The affected element is the function SetMobileAPInfoById of the file /goform/aspForm. Such manipulation of the argument param leads to stack-based buffer overflow. The attack may be performed from remote. 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-2026-10259?
How do I fix CVE-2026-10259?
No fix has been published for CVE-2026-10259 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-2026-10259 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-10259 exists.
Sources
Also known as GHSA-ffmq-hhhq-fw84.