# CVE-2026-26944: Missing authorization in PowerProtect Data Domain

> Unauthenticated remote attackers can execute arbitrary commands with root privileges if an authenticated user performs a specific action.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 20 Apr 2026
- **Updated:** 22 Apr 2026
- **Also known as:** GHSA-hmwv-mfjf-w46v

## What is CVE-2026-26944?

CVE-2026-26944 is a high-severity missing authorization vulnerability in Dell Data Domain Operating System, published on 20 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Dell PowerProtect Data Domain, versions 7.7.1.0 through 8.6, LTS2025 release version 8.3.1.0 through 8.3.1.20, LTS2024 release versions 7.13.1.0 through 7.13.1.60 contain a missing authentication for critical function vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to arbitrary command execution with root privileges. Exploitation requires an authenticated user to perform a specific action.

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2026-26944?

It affects 2 products.


Products: Dell Data Domain Operating System, Dell Powerprotect Dp Series Appliance.

## How do I fix CVE-2026-26944?

No fix has been published for CVE-2026-26944 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-26944 being exploited?

There is no known exploitation of CVE-2026-26944 in the wild and no public exploit code.

## Other vulnerabilities in Dell Data Domain Operating System

- [CVE-2026-53481](https://insights.sbomify.com/CVE-2026-53481/): Path traversal in PowerProtect Data Domain (critical 9.8)
- [CVE-2026-53483](https://insights.sbomify.com/CVE-2026-53483/): Auth bypass in PowerProtect Data Domain (critical 9.8)
- [CVE-2025-36594](https://insights.sbomify.com/CVE-2025-36594/): Auth bypass in PowerProtect Data Domain Feature Release (critical 9.8)
- [CVE-2026-56086](https://insights.sbomify.com/CVE-2026-56086/): Missing authorization in PowerProtect Data Domain (high 8.8)
- [CVE-2025-29987](https://insights.sbomify.com/CVE-2025-29987/): Privilege escalation in DD OS 7.10 (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-26944 and fix it if it is affected.

What it is: CVE-2026-26944 is a high-severity missing authorization vulnerability in Dell Data Domain Operating System, published on 20 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-26944 in the wild and no public exploit code.

Affected product: Dell Data Domain Operating System. 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-2026-26944/ (Markdown: https://insights.sbomify.com/CVE-2026-26944/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-26944
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-26944
- OSV: https://osv.dev/vulnerability/CVE-2026-26944

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-26944/
Summaries are generated and may contain mistakes; the official description above is the record.