CVE-2022-4608 Memory corruption in RTU500 series

High 7.5 Published 26 Jul 2023 Updated 5 Mar 2025

A stack overflow in the RTU500 series causes an unexpected restart when IEC 62351-3 is enabled and session resumption expires.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2022-4608?

CVE-2022-4608 is a high-severity memory corruption vulnerability in Hitachi Energy RTU500 series, published on 26 Jul 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability exists in HCI IEC 60870-5-104 function included in certain versions of the RTU500 series product. The vulnerability can only be exploited, if the HCI 60870-5-104 is configured with support for IEC 62351-3. After session resumption interval is expired an RTU500 initiated update of session parameters causes an unexpected restart due to a stack overflow.

Weakness: CWE-787

Which versions are affected by CVE-2022-4608?

It affects 1 product.

Products include Hitachienergy Rtu500 Firmware.

How do I fix CVE-2022-4608?

No fix has been published for CVE-2022-4608 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-2022-4608 being exploited?

There is no known exploitation of CVE-2022-4608 in the wild and no public exploit code.

Sources

Also known as GHSA-5568-g9wp-2cv7.