# CVE-2026-7310: Hitachi Energy HiDraw heap overflow in XML parser

Source: https://junglewise.ai/threats/cve-2026-7310-hitachi-energy-hidraw-heap-overflow-in-xml-parser  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-26. Updated: 2026-05-26  
License: CC BY 4.0 with a link back

CVE-2026-7310 · Severity: info · CVSS 4.4 · Published 2026-05-26

Hitachi Energy HiDraw, a tool used for engineering and configuring industrial control systems, contains a security flaw in how it processes XML files. An attacker with existing access to the system could use a specially crafted file to crash the application or potentially take control of the computer. This could lead to operational downtime or unauthorized access to sensitive engineering data.

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

## Quick answers

**Is CVE-2026-7310 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-7310 being exploited in the wild.

**How severe is CVE-2026-7310?** Informational severity, with a CVSS score of 4.4, published 26 May 2026.

**Which products and versions are affected?** Hitachi Energy HiDraw.

**Is there a fix for CVE-2026-7310?** 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-2026-7310 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2026-7310?** Check whether you run Hitachi Energy HiDraw. 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

A heap-based buffer overflow (CWE-122) exists within the XML parser component of Hitachi Energy HiDraw. The vulnerability is triggered when the application processes a maliciously crafted XML file. To exploit this, an attacker must have local access to the system and valid credentials (low privilege). Successful exploitation requires user interaction, such as tricking a legitimate user into opening the malicious file, and can result in memory corruption, application crashes, or arbitrary code execution. Hitachi Energy has assigned a CVSS 4.0 score of 4.4, reflecting the requirement for local access and specific environmental conditions.

## Affected products

- Hitachi Energy HiDraw

## Timeline

- 2026-05-26: disclosed: Initial disclosure by Hitachi Energy and NVD publication.

## References

- [https://publisher.hitachienergy.com/preview?DocumentID=8DBD000248&LanguageCode=en&DocumentPartId=&Action=Launch](https://publisher.hitachienergy.com/preview?DocumentID=8DBD000248&LanguageCode=en&DocumentPartId=&Action=Launch)