# CVE-2026-102712: Information disclosure in NetX Duo

> An unauthenticated attacker can trigger an out-of-bounds read in the DTLS parser to disclose adjacent process memory or cause a crash.

- **Severity:** High 8.8 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/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:** 29 Sep 2026
- **Updated:** 29 Sep 2026
- **Also known as:** GHSA-52fg-7x3j-mp79, GHSA-5xr3-wpxf-rw5q

## What is CVE-2026-102712?

CVE-2026-102712 is a high-severity vulnerability in Eclipse Foundation NetX Duo, published on 29 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

On the first DTLS ClientHello, the parser copies a device-claimed session_id length and validates the

ciphersuite-list length against the total record length instead of the remaining bytes. An unauthenticated

peer drives an OOB source read of up to 255 bytes, and those bytes are echoed verbatim into the outgoing

ServerHello, disclosing adjacent process memory over the network. The crash variant fires on the first

packet.

Weakness: CWE-125 (Out-of-bounds Read)

## Which versions are affected by CVE-2026-102712?


## How do I fix CVE-2026-102712?

No fix has been published for CVE-2026-102712 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-102712 being exploited?

There is no known exploitation of CVE-2026-102712 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-102712 and fix it if it is affected.

What it is: CVE-2026-102712 is a high-severity vulnerability in Eclipse Foundation NetX Duo, published on 29 Sep 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-2026-102712 in the wild and no public exploit code.

Affected product: Eclipse Foundation NetX Duo. 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-2026-102712/ (Markdown: https://insights.sbomify.com/CVE-2026-102712/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-102712
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-102712
- OSV: https://osv.dev/vulnerability/CVE-2026-102712

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-102712/
Summaries are generated and may contain mistakes; the official description above is the record.