# CVE-2026-26117: Arc Enabled Servers - Azure Connected Machine Agent Elevation of Privilege Vulnerability

> An authorized attacker can bypass authentication via an alternate path to elevate privileges locally on Azure Connected Machine Agents.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Mar 2026
- **Updated:** 19 Jun 2026
- **Also known as:** GHSA-76jf-fgc3-37rx

## What is CVE-2026-26117?

CVE-2026-26117 is a high-severity authentication bypass vulnerability in Microsoft Arc Enabled Servers - Azure Connected Machine Agent, published on 10 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Authentication bypass using an alternate path or channel in Azure Windows Virtual Machine Agent allows an authorized attacker to elevate privileges locally.

Weakness: CWE-288 (Authentication Bypass Using an Alternate Path or Channel)

## Which versions are affected by CVE-2026-26117?

It affects 1 product.


Products: Microsoft Arc Enabled Servers Azure Connected Machine Agent.

## How do I fix CVE-2026-26117?

No fix has been published for CVE-2026-26117 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-26117 being exploited?

There is no known exploitation of CVE-2026-26117 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-26117 and fix it if it is affected.

What it is: CVE-2026-26117 is a high-severity authentication bypass vulnerability in Microsoft Arc Enabled Servers - Azure Connected Machine Agent, published on 10 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-26117 in the wild and no public exploit code.

Affected product: Microsoft Arc Enabled Servers - Azure Connected Machine Agent. 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-2026-26117/ (Markdown: https://insights.sbomify.com/CVE-2026-26117/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-26117
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-26117
- OSV: https://osv.dev/vulnerability/CVE-2026-26117

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-26117/
Summaries are generated and may contain mistakes; the official description above is the record.