# CVE-2026-3428: Race condition in Member Center(华硕大厅)

> Local attackers can escalate privileges to Administrator by exploiting a race condition in the ASUS Member Center update process to execute malicious payloads.

- **Severity:** Medium 5.4 (`CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 16 Apr 2026
- **Updated:** 16 Apr 2026
- **Also known as:** GHSA-49h6-4qj3-4f42

## What is CVE-2026-3428?

CVE-2026-3428 is a medium-severity vulnerability in ASUS Member Center(华硕大厅), published on 16 Apr 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

A Download of Code Without Integrity Check vulnerability in the update modules in ASUS Member Center(华硕大厅) allows a local user to achieve privilege escalation to Administrator via exploitation of a Time-of-check Time-of-use (TOC-TOU) during the update process, where an unexpected payload is substituted for a legitimate one immediately after download, and subsequently executed with administrative privileges upon user consent.
Refer to the 'Security Update for ASUS Member Center' section on the ASUS Security Advisory for more information.

Weakness: CWE-494 (Download of Code Without Integrity Check), CWE-367 (Time-of-check Time-of-use (TOCTOU) Race Condition)

## Which versions are affected by CVE-2026-3428?


## How do I fix CVE-2026-3428?

No fix has been published for CVE-2026-3428 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-3428 being exploited?

There is no known exploitation of CVE-2026-3428 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-3428 and fix it if it is affected.

What it is: CVE-2026-3428 is a medium-severity vulnerability in ASUS Member Center(华硕大厅), published on 16 Apr 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-2026-3428 in the wild and no public exploit code.

Affected product: ASUS Member Center(华硕大厅). 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-2026-3428/ (Markdown: https://insights.sbomify.com/CVE-2026-3428/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-3428
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-3428
- OSV: https://osv.dev/vulnerability/CVE-2026-3428

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-3428/
Summaries are generated and may contain mistakes; the official description above is the record.