CVE-2026-76003 UTT HiPER 1200GW formGroupConfig strcpy stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the UTT HiPER 1200GW router via the timestart parameter, 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-2026-76003?
CVE-2026-76003 is a critical memory corruption vulnerability in UTT HiPER 1200GW, published on 19 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A weakness has been identified in UTT HiPER 1200GW up to 2.5.3-170306. Affected is the function strcpy of the file /goform/formGroupConfig. Executing a manipulation of the argument timestart can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks.
Which versions are affected by CVE-2026-76003?
How do I fix CVE-2026-76003?
No fix has been published for CVE-2026-76003 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-2026-76003 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-76003 exists.
Sources
Also known as GHSA-6rxv-jchw-qjv3.