Is CVE-2026-56437 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-56437 being exploited in the wild.

How severe is CVE-2026-56437?

High severity, with a CVSS score of 7.8, published 8 July 2026.

Which products and versions are affected?

Fuji Electric Pupsman prior to 3.9.0.

Is there a fix for CVE-2026-56437?

A patch was published on 2026-07-08: Fixed in version 3.9.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-56437 attacked?

It is attacked with local access, in a network appliance.

Am I affected by CVE-2026-56437?

Check whether you run Fuji Electric Pupsman 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.

CVE-2026-56437: Fuji Electric Pupsman uncontrolled search path in installer

CVE-2026-56437 · Severity: high · CVSS 7.8 · Published 2026-07-08

Fuji Electric Pupsman is software used to manage Uninterruptible Power Supply (UPS) systems, ensuring servers shut down safely during power outages. A security flaw in the software's installer could allow an attacker to gain full control over a computer if a user is tricked into running the installer from a folder containing a malicious file. This could lead to a complete system takeover, unauthorized data access, or disruption of power management operations.

Vendors: Fuji Electric.

Quick answers

Is CVE-2026-56437 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-56437 being exploited in the wild.
How severe is CVE-2026-56437?: High severity, with a CVSS score of 7.8, published 8 July 2026.
Which products and versions are affected?: Fuji Electric Pupsman prior to 3.9.0.
Is there a fix for CVE-2026-56437?: A patch was published on 2026-07-08: Fixed in version 3.9.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-56437 attacked?: It is attacked with local access, in a network appliance.
Am I affected by CVE-2026-56437?: Check whether you run Fuji Electric Pupsman 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

An uncontrolled search path element vulnerability (CWE-427) exists in the installer for Fuji Electric Pupsman versions prior to 3.9.0. The vulnerability occurs because the installer attempts to load DLL dependencies from its current working directory without sufficient validation. A local attacker can exploit this by placing a maliciously crafted DLL file in the same directory as the installer executable. When a user executes the installer (requiring user interaction), the malicious DLL is loaded and executed with SYSTEM privileges. This allows for full local privilege escalation. The issue is resolved in Pupsman version 3.9.0.

Affected products

Fuji Electric Co.,Ltd. Pupsman prior to 3.9.0

Timeline

2026-07-08: disclosed
2026-07-08: advisory
2026-07-08: patched: Fixed in version 3.9.0

References

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