# CVE-2026-26034: Privilege escalation in UPS Multi-UPS Management Console (MUMC)

> An attacker can execute arbitrary code with SYSTEM privileges via DLL hijacking due to incorrect default permissions in the UPS management console.

- **Severity:** High 8.5 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 5 Mar 2026
- **Updated:** 5 Mar 2026
- **Also known as:** GHSA-v2c4-w8cf-vw7m

## What is CVE-2026-26034?

CVE-2026-26034 is a high-severity vulnerability in Dell Inc. UPS Multi-UPS Management Console (MUMC), published on 5 Mar 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

UPS Multi-UPS Management Console (MUMC) version 01.06.0001 (A03) contains an Incorrect Default Permissions (CWE-276) vulnerability that allows an attacker to execute arbitrary code with SYSTEM privileges by causing the application to load a specially crafted DLL.

Weakness: CWE-428 (Unquoted Search Path or Element), CWE-276 (Incorrect Default Permissions)

## Which versions are affected by CVE-2026-26034?

It affects 1 product.


Products: Dell Ups Multi-Ups Management Console.

## How do I fix CVE-2026-26034?

No fix has been published for CVE-2026-26034 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-26034 being exploited?

There is no known exploitation of CVE-2026-26034 in the wild and no public exploit code.

## Other vulnerabilities in Dell Inc. UPS Multi-UPS Management Console (MUMC)

- [CVE-2026-26033](https://insights.sbomify.com/CVE-2026-26033/): Privilege escalation in UPS Multi-UPS Management Console (MUMC) (high 8.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-26034 and fix it if it is affected.

What it is: CVE-2026-26034 is a high-severity vulnerability in Dell Inc. UPS Multi-UPS Management Console (MUMC), published on 5 Mar 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-26034 in the wild and no public exploit code.

Affected product: Dell Inc. UPS Multi-UPS Management Console (MUMC). 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-2026-26034/ (Markdown: https://insights.sbomify.com/CVE-2026-26034/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-26034
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-26034
- OSV: https://osv.dev/vulnerability/CVE-2026-26034

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-26034/
Summaries are generated and may contain mistakes; the official description above is the record.