# CVE-2026-91754: Hitachi Dynamic Link Manager for VMware stack-based buffer overflow

Source: https://junglewise.ai/threats/cve-2026-91754-stack-based-buffer-overflow-vulnerability-in-hitachi-dynamic-link  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-91754 · Severity: high · CVSS 8.1 · Published 2026-11-10

Hitachi Dynamic Link Manager for VMware is management software for virtual machine environments. A stack-based buffer overflow vulnerability allows a remote attacker to execute arbitrary code with high privileges, potentially compromising all managed virtual machines and their data.

Technologies: [Hitachi Dynamic Link Manager for VMware](https://junglewise.ai/threats/technologies/dynamic-link-manager-for-vmware). Vendors: [Hitachi](https://junglewise.ai/threats/vendors/hitachi).

## Quick answers

**Is CVE-2026-91754 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-91754 being exploited in the wild.

**How severe is CVE-2026-91754?** High severity, with a CVSS score of 8.1, published 10 November 2026.

**Which products and versions are affected?** Hitachi Dynamic Link Manager for VMware 8.7.3-00 to 9.0.4-00.

**Is there a fix for CVE-2026-91754?** Yes: fixed in 9.0.4-01. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-91754 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-91754?** Check whether you run Hitachi Dynamic Link Manager for VMware 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.

## How to fix

- Fixed in 9.0.4-01

## Technical details

A stack-based buffer overflow exists in Hitachi Dynamic Link Manager for VMware versions 8.7.3-00 through 9.0.4-00. The vulnerability is reachable over the network without authentication but requires specific conditions (high AC), and an attacker can achieve code execution with full confidentiality, integrity, and availability impact.

## Affected products

- Hitachi Dynamic Link Manager for VMware 8.7.3-00 to 9.0.4-00

## Timeline

- 2026-11-10: disclosed

## References

- [https://www.hitachi.com/products/it/software/security/info/vuls/hitachi-sec-2026-161/index.html](https://www.hitachi.com/products/it/software/security/info/vuls/hitachi-sec-2026-161/index.html)

## Related threats

- [Hitachi Dynamic Link Manager for VMware OS command injection](https://junglewise.ai/threats/cve-2026-91757-os-command-injection-vulnerability-in-hitachi-dynamic-link)
- [Hitachi Dynamic Link Manager for VMware OS command injection](https://junglewise.ai/threats/cve-2026-91756-os-command-injection-vulnerability-in-hitachi-dynamic-link)
- [Hitachi Dynamic Link Manager for VMware integer overflow](https://junglewise.ai/threats/cve-2026-91755-integer-overflow-vulnerability-in-hitachi-dynamic-link-manager)