CVE-2026-45777 Open XDMoD Vulnerable to Unauthenticated Remote Code Execution (RCE) via OS Command Injection

Critical 9.3 Published 5 Jun 2026 Updated 5 Jun 2026

Unauthenticated attackers can execute arbitrary system commands on Open XDMoD servers, leading to full system compromise and data manipulation.

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-2026-45777?

CVE-2026-45777 is a critical command injection vulnerability in ubccr xdmod, published on 5 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

OpenXDMoD is an open framework for collecting and analyzing HPC metrics. Starting in version 9.5.0 and prior to version 11.0.3, an attacker can remotely execute arbitrary system commands on the web server hosting Open XDMoD with the privileges of the web server process. This could allow an attacker to read or modify application data, alter system configuration, or disrupt service availability. All deployments of Open XDMoD versions 9.5.0 through 11.0.2 (inclusive) are impacted. This issue was reported privately on 2026-04-06, and at this time there is no evidence that this vulnerability has been exploited in the wild. The vulnerability was patched in Open XDMoD 11.0.3 on 2026-05-12. As a workaround, apply the patch manually.

Weakness: CWE-78

Which versions are affected by CVE-2026-45777?

It affects 1 product.

Products include Buffalo Open Xdmod.

How do I fix CVE-2026-45777?

No fix has been published for CVE-2026-45777 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2026-45777 being exploited?

There is no known exploitation of CVE-2026-45777 in the wild and no public exploit code.

Sources

Also known as GHSA-29qm-7w4v-43fw.