# CVE-2025-59367: Auth bypass in DSL-AC51

> Remote attackers can bypass authentication to gain unauthorized access to ASUS DSL series routers.

- **Severity:** Critical 9.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 Nov 2025
- **Updated:** 26 Feb 2026
- **Also known as:** GHSA-fp9m-phr9-853c

## What is CVE-2025-59367?

CVE-2025-59367 is a critical authentication bypass vulnerability in ASUS DSL-AC51, published on 13 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An authentication bypass vulnerability has been identified in certain DSL series routers, may allow remote attackers to gain unauthorized access into the affected system. Refer to the 'Security Update for DSL Series Router' section on the ASUS Security Advisory for more information.

Weakness: CWE-306 (Missing Authentication for Critical Functionality), CWE-288 (Authentication Bypass Using an Alternate Path or Channel)

## Which versions are affected by CVE-2025-59367?

It affects 3 products.


Products: Asus Dsl-Ac51 Firmware, Asus Dsl-Ac750 Firmware, Asus Dsl-N16 Firmware.

## How do I fix CVE-2025-59367?

No fix has been published for CVE-2025-59367 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-59367 being exploited?

There is no known exploitation of CVE-2025-59367 in the wild and no public exploit code.

## Other vulnerabilities in ASUS DSL-AC51

- [CVE-2017-14698](https://insights.sbomify.com/CVE-2017-14698/): Auth bypass in n/a (critical 9.8)
- [CVE-2017-14699](https://insights.sbomify.com/CVE-2017-14699/): XML external entity in n/a (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-59367 and fix it if it is affected.

What it is: CVE-2025-59367 is a critical authentication bypass vulnerability in ASUS DSL-AC51, published on 13 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-59367 in the wild and no public exploit code.

Affected product: ASUS DSL-AC51. 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-2025-59367/ (Markdown: https://insights.sbomify.com/CVE-2025-59367/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-59367
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-59367
- OSV: https://osv.dev/vulnerability/CVE-2025-59367

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-59367/
Summaries are generated and may contain mistakes; the official description above is the record.