# CVE-2026-18085: Improper Input Validation Leads to Arbitrary File Download and Potential Denial of Service in BlackBerry UEM

> Improper input validation in the BlackBerry UEM Management Console allows attackers to download arbitrary files and cause denial of service.

- **Severity:** Medium 5.9 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:L/SA:L`)
- **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:** 28 Jul 2026
- **Updated:** 28 Jul 2026
- **Also known as:** GHSA-xxhj-c62m-3wgm

## What is CVE-2026-18085?

CVE-2026-18085 is a medium-severity path traversal vulnerability in BlackBerry UEM, published on 28 Jul 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

An Improper Input Validation in the BlackBerry UEM Management Console of BlackBerry UEM 12.23.0 QF8 and earlier allows Arbitrary File Download and Potential Denial of Service.

Weakness: CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component)

## Which versions are affected by CVE-2026-18085?

It affects 1 product.


Products: Blackberry Unified Endpoint Manager.

## How do I fix CVE-2026-18085?

No fix has been published for CVE-2026-18085 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-18085 being exploited?

There is no known exploitation of CVE-2026-18085 in the wild and no public exploit code.

## Other vulnerabilities in BlackBerry UEM

- [CVE-2026-18084](https://insights.sbomify.com/CVE-2026-18084/): Cross-Site Scripting (XSS) in Management Console of BlackBerry UEM (high 8.6)
- [CVE-2018-8890](https://insights.sbomify.com/CVE-2018-8890/): Information disclosure in UEM (high 7.5)
- [CVE-2018-8892](https://insights.sbomify.com/CVE-2018-8892/): Cross-site request forgery in BlackBerry UEM (medium 6.5)
- [CVE-2017-17442](https://insights.sbomify.com/CVE-2017-17442/): Cross-site scripting in UEM Management Console (medium 6.1)
- [CVE-2020-6933](https://insights.sbomify.com/CVE-2020-6933/): Denial of service in BlackBerry UEM (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-18085 and fix it if it is affected.

What it is: CVE-2026-18085 is a medium-severity path traversal vulnerability in BlackBerry UEM, published on 28 Jul 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-2026-18085 in the wild and no public exploit code.

Affected product: BlackBerry UEM. 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-2026-18085/ (Markdown: https://insights.sbomify.com/CVE-2026-18085/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-18085
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-18085
- OSV: https://osv.dev/vulnerability/CVE-2026-18085

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-18085/
Summaries are generated and may contain mistakes; the official description above is the record.