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

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

- **Severity:** Critical 9.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Jun 2026
- **Updated:** 5 Jun 2026
- **Also known as:** GHSA-29qm-7w4v-43fw

## 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 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2026-45777?

It affects 1 product.


Products: 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.

## Is CVE-2026-45777 being exploited?

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

## Other vulnerabilities in ubccr xdmod

- [CVE-2018-16988](https://insights.sbomify.com/CVE-2018-16988/): Auth bypass in n/a (critical 9.8)
- [CVE-2026-45779](https://insights.sbomify.com/CVE-2026-45779/): Open XDMoD Vulnerable to Unauthenticated SQL Injection Leading to Full Database Compromise (critical 9.3)
- [CVE-2026-45778](https://insights.sbomify.com/CVE-2026-45778/): Open XDMoD Vulnerable to Reflected Cross-Site Scripting (XSS) in Password Reset (high 8.6)
- [CVE-2018-16961](https://insights.sbomify.com/CVE-2018-16961/): Path traversal in n/a (high 7.5)
- [CVE-2018-16960](https://insights.sbomify.com/CVE-2018-16960/): Cross-site scripting in n/a (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-45777 and fix it if it is affected.

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

Affected product: ubccr xdmod. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-45777/ (Markdown: https://insights.sbomify.com/CVE-2026-45777/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-45777
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-45777
- OSV: https://osv.dev/vulnerability/CVE-2026-45777

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-45777/
Summaries are generated and may contain mistakes; the official description above is the record.