# CVE-2025-1732: Privilege escalation in USG FLEX H series uOS firmware

> An authenticated administrator can escalate privileges by uploading a crafted configuration file in the recovery function of Zyxel USG FLEX H devices.

- **Severity:** Medium 6.7 (`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Apr 2025
- **Updated:** 26 Feb 2026
- **Also known as:** GHSA-7wf3-pq8r-xwwq

## What is CVE-2025-1732?

CVE-2025-1732 is a medium-severity vulnerability in Zyxel USG FLEX H series uOS firmware, published on 22 Apr 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An improper privilege management vulnerability in the recovery function of the Zyxel USG FLEX H series uOS firmware version V1.31 and earlier could allow an authenticated local attacker with administrator privileges to upload a crafted configuration file and escalate privileges on a vulnerable device.

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2025-1732?

It affects 1 product.


Products: Zyxel Uos.

## How do I fix CVE-2025-1732?

No fix has been published for CVE-2025-1732 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-1732 being exploited?

There is no known exploitation of CVE-2025-1732 in the wild and no public exploit code.

## Other vulnerabilities in Zyxel USG FLEX H series uOS firmware

- [CVE-2025-1731](https://insights.sbomify.com/CVE-2025-1731/): Privilege escalation in USG FLEX H series uOS firmware (high 7.8)
- [CVE-2024-9677](https://insights.sbomify.com/CVE-2024-9677/): Information disclosure in USG FLEX H series uOS firmware (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-1732 and fix it if it is affected.

What it is: CVE-2025-1732 is a medium-severity vulnerability in Zyxel USG FLEX H series uOS firmware, published on 22 Apr 2025. 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-2025-1732 in the wild and no public exploit code.

Affected product: Zyxel USG FLEX H series uOS firmware. 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-2025-1732/ (Markdown: https://insights.sbomify.com/CVE-2025-1732/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-1732
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-1732
- OSV: https://osv.dev/vulnerability/CVE-2025-1732

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-1732/
Summaries are generated and may contain mistakes; the official description above is the record.