# CVE-2026-34473: Denial of service in n/a

> Unauthenticated attackers can cause a denial of service on ZTE routers by sending oversized POST requests to the web interface, requiring a reboot to recover.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 May 2026
- **Updated:** 26 May 2026
- **Also known as:** GHSA-vx9f-9xjj-7h22

## What is CVE-2026-34473?

CVE-2026-34473 is a high-severity denial of service vulnerability in n/a, published on 6 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Unauthenticated DoS in ZTE H8102E, H168N, H167A, H199A, H288A, H198A, H267A, H267N, H268A, H388X, H196A, H369A, H268N, H208N, H367N, H181A, and H196Q. A denial-of-service condition can be triggered against the router's web interface by sending an oversized application/x-www-form-urlencoded POST body. After triggering, the management interface may become unresponsive until the device is rebooted. This may affect any firmware version prior to 2022 (reporter observation). The supplier stated that devices are not vulnerable since 2021-03-23; operator firmware may vary.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2026-34473?


## How do I fix CVE-2026-34473?

No fix has been published for CVE-2026-34473 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-34473 being exploited?

There is no known exploitation of CVE-2026-34473 in the wild and no public exploit code.

Public exploit code:

- Technical breakdown of CVE-2026-34473, an unauthenticated denial of service affecting 17+ ZTE router models. (github_poc): https://github.com/minanagehsalalma/cve-2026-34473-unauthenticated-dos-zte-routers
- ZTE Routers  - Unauthenticated Denial of Service (exploitdb)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-34473 and fix it if it is affected.

What it is: CVE-2026-34473 is a high-severity denial of service vulnerability in n/a, published on 6 May 2026. 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-2026-34473 in the wild and no public exploit code.

Affected product: n/a. 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-2026-34473/ (Markdown: https://insights.sbomify.com/CVE-2026-34473/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-34473
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-34473
- OSV: https://osv.dev/vulnerability/CVE-2026-34473

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-34473/
Summaries are generated and may contain mistakes; the official description above is the record.