CVE-2026-5566 UTT HiPER 1250GW formNatStaticMap strcpy buffer overflow
Remote attackers can trigger a buffer overflow in the UTT HiPER 1250GW router via the NatBind parameter, 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-2026-5566?
CVE-2026-5566 is a high-severity memory corruption vulnerability in UTT HiPER 1250GW, published on 5 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was detected in UTT HiPER 1250GW up to 3.2.7-210907-180535. This affects the function strcpy of the file /goform/formNatStaticMap. Performing a manipulation of the argument NatBind results in buffer overflow. Remote exploitation of the attack is possible. The exploit is now public and may be used.
Which versions are affected by CVE-2026-5566?
How do I fix CVE-2026-5566?
No fix has been published for CVE-2026-5566 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-2026-5566 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5566 exists.
Sources
Also known as GHSA-xgwr-cg3h-pjvj.