CVE-2026-3815 UTT HiPER 810G formApMail strcpy buffer overflow

High 8.7 Published Updated

Remote attackers can trigger a buffer overflow in the UTT HiPER 810G via the formApMail interface, 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-2026-3815?

CVE-2026-3815 is a high-severity memory corruption vulnerability in UTT HiPER 810G, published on 9 Mar 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 810G up to 1.7.7-1711. This affects the function strcpy of the file /goform/formApMail. Executing a manipulation can lead to buffer overflow. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks.

Weakness: CWE-120, CWE-119

Which versions are affected by CVE-2026-3815?

It affects 1 product.

Products include Utt 810g Firmware.

How do I fix CVE-2026-3815?

No fix has been published for CVE-2026-3815 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-2026-3815 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3815 exists.

Sources

Also known as GHSA-qfr8-p287-9w92.

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