# CVE-2025-37166: Unexpected shutdown in HPE Instant On Access Points after processing specific packets

> Attackers can cause HPE Instant On Access Points to become unresponsive via crafted packets, requiring a hard reset to restore service.

- **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:** 13 Jan 2026
- **Updated:** 10 May 2026
- **Also known as:** GHSA-m62x-gm5x-3x29

## What is CVE-2025-37166?

CVE-2025-37166 is a high-severity denial of service vulnerability in Hewlett Packard Enterprise (HPE) Instant On, published on 13 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability affecting HPE Networking Instant On Access Points has been identified where a device processing a specially crafted packet could enter a non-responsive state, in some cases requiring a hard reset to re-establish services. A malicious actor could leverage this vulnerability to conduct a Denial-of-Service attack on a target network.

Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2025-37166?


## How do I fix CVE-2025-37166?

No fix has been published for CVE-2025-37166 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-37166 being exploited?

There is no known exploitation of CVE-2025-37166 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-37166 and fix it if it is affected.

What it is: CVE-2025-37166 is a high-severity denial of service vulnerability in Hewlett Packard Enterprise (HPE) Instant On, published on 13 Jan 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-2025-37166 in the wild and no public exploit code.

Affected product: Hewlett Packard Enterprise (HPE) Instant On. 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-2025-37166/ (Markdown: https://insights.sbomify.com/CVE-2025-37166/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-37166
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-37166
- OSV: https://osv.dev/vulnerability/CVE-2025-37166

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-37166/
Summaries are generated and may contain mistakes; the official description above is the record.