# CVE-2025-3511: Denial of service in CC-Link IE TSN Analog-Digital Converter module NZ2GN2B-60AD4

> Remote unauthenticated attackers can cause denial of service in Mitsubishi CC-Link IE TSN modules by sending crafted UDP packets.

- **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:** 25 Apr 2025
- **Updated:** 27 Aug 2026
- **Also known as:** GHSA-f46p-qr4h-m6p4

## What is CVE-2025-3511?

CVE-2025-3511 is a high-severity denial of service vulnerability in Mitsubishi Electric Corporation CC-Link IE TSN Analog-Digital Converter module NZ2GN2B-60AD4, published on 25 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Improper Validation of Specified Quantity in Input vulnerability in Mitsubishi Electric Corporation CC-Link IE TSN Remote I/O module, CC-Link IE TSN Analog-Digital Converter module, CC-Link IE TSN Digital-Analog Converter module, CC-Link IE TSN FPGA module, CC-Link IE TSN Remote Station Communication LSI CP620 with GbE-PHY, MELSEC iQ-R Series CC-Link IE TSN Master/Local Module, MELSEC iQ-R Series Ethernet Interface Module, CC-Link IE TSN Master/Local Station Communication LSI CP610, MELSEC iQ-F Series FX5 CC-Link IE TSN Master/Local Module, MELSEC iQ-F Series FX5 Ethernet Module, MELSEC iQ-F Series FX5-ENET/IP Ethernet Module, and MELSEC iQ-R Series CPU module allows a remote unauthenticated attacker to cause a Denial of Service condition in the products by sending specially crafted UDP packets.

Weakness: CWE-1284 (Improper Validation of Specified Quantity in Input)

## Which versions are affected by CVE-2025-3511?


## How do I fix CVE-2025-3511?

No fix has been published for CVE-2025-3511 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-3511 being exploited?

There is no known exploitation of CVE-2025-3511 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-3511 and fix it if it is affected.

What it is: CVE-2025-3511 is a high-severity denial of service vulnerability in Mitsubishi Electric Corporation CC-Link IE TSN Analog-Digital Converter module NZ2GN2B-60AD4, published on 25 Apr 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-2025-3511 in the wild and no public exploit code.

Affected product: Mitsubishi Electric Corporation CC-Link IE TSN Analog-Digital Converter module NZ2GN2B-60AD4. 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-2025-3511/ (Markdown: https://insights.sbomify.com/CVE-2025-3511/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-3511
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-3511
- OSV: https://osv.dev/vulnerability/CVE-2025-3511

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-3511/
Summaries are generated and may contain mistakes; the official description above is the record.