# CVE-2026-1972: Edimax BR-6208AC auth_check_userpass2 default credentials

> Attackers can remotely access the Edimax BR-6208AC router using default credentials due to hardcoded authentication logic, leading to full device compromise.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Feb 2026
- **Updated:** 23 Feb 2026
- **Also known as:** GHSA-cj3g-43ph-gvg8

## What is CVE-2026-1972?

CVE-2026-1972 is a medium-severity vulnerability in Edimax BR-6208AC, published on 6 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability was found in Edimax BR-6208AC 2_1.02. The affected element is the function auth_check_userpass2. Performing a manipulation of the argument Username/Password results in use of default credentials. The attack may be initiated remotely. The exploit has been made public and could be used. The vendor confirms that the affected product is end-of-life. They confirm that they "will issue a consolidated Security Advisory on our official support website." This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-1392 (Use of Default Credentials)

## Which versions are affected by CVE-2026-1972?

It affects 1 product.


Products: Edimax Br-6208ac Firmware.

## How do I fix CVE-2026-1972?

No fix has been published for CVE-2026-1972 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-1972 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1972 exists.

## Other vulnerabilities in Edimax BR-6208AC

- [CVE-2025-70161](https://insights.sbomify.com/CVE-2025-70161/): Command injection in n/a (critical 9.8)
- [CVE-2025-15256](https://insights.sbomify.com/CVE-2025-15256/): Edimax BR-6208AC Web-based Configuration formStaDrvSetup command injection (medium 6.9)
- [CVE-2025-15257](https://insights.sbomify.com/CVE-2025-15257/): Edimax BR-6208AC Web-based Configuration formRoute command injection (medium 6.9)
- [CVE-2025-14910](https://insights.sbomify.com/CVE-2025-14910/): Edimax BR-6208AC FTP Daemon Service handle_retr path traversal (medium 5.3)
- [CVE-2025-15258](https://insights.sbomify.com/CVE-2025-15258/): Edimax BR-6208AC Web-based Configuration formALGSetup redirect (medium 5.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-1972 and fix it if it is affected.

What it is: CVE-2026-1972 is a medium-severity vulnerability in Edimax BR-6208AC, published on 6 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1972 exists.

Affected product: Edimax BR-6208AC. 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-2026-1972/ (Markdown: https://insights.sbomify.com/CVE-2026-1972/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-1972
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-1972
- OSV: https://osv.dev/vulnerability/CVE-2026-1972

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-1972/
Summaries are generated and may contain mistakes; the official description above is the record.