# CVE-2024-8176: Hitachi Energy REB500 denial of service in open-source dependencies

Source: https://junglewise.ai/threats/cve-2024-8176-hitachi-energy-reb500  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-06. Updated: 2026-10-06  
License: CC BY 4.0 with a link back

CVE-2024-8176 · Severity: high · Published 2026-10-06

Hitachi Energy REB500 is a critical infrastructure device used in the energy sector to control and monitor power distribution systems. The product contains vulnerable open-source libraries that can be exploited to cause denial of service, disrupting power grid operations. An attacker with network access could trigger uncontrolled recursion or resource exhaustion to crash or freeze the device, affecting electricity delivery to customers.

Vendors: [Hitachi Energy](https://junglewise.ai/threats/vendors/hitachi-energy).

## Quick answers

**Is CVE-2024-8176 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2024-8176 being exploited in the wild.

**How severe is CVE-2024-8176?** High severity, published 6 October 2026.

**Which products and versions are affected?** Hitachi Energy REB500 8.3.3.1 and earlier.

**Is there a fix for CVE-2024-8176?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2024-8176 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2024-8176?** Check whether you run Hitachi Energy REB500 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

Two open-source library vulnerabilities affect REB500 versions 8.3.3.1 and earlier: uncontrolled recursion (CVE-2024-8176) and allocation of resources without limits (CVE-2025-59375). Both can be exploited remotely over the network to cause denial of service by exhausting system resources or triggering stack overflow conditions. The advisory does not specify a patched version or confirm whether upgrades are available.

## Affected products

- Hitachi Energy REB500 8.3.3.1 and earlier

## Identifiers

- CVE-2024-8176
- CVE-2025-59375

## Timeline

- 2026-10-06: disclosed