# CVE-2026-102718: Memory corruption in NetX Duo

> Remote attackers can cause denial of service or heap corruption in NetX Duo SNMP agents via crafted packets with invalid OID lengths.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/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-7qmm-29vg-7hf8, GHSA-vhx3-6gpg-5fjw

## What is CVE-2026-102718?

CVE-2026-102718 is a high-severity memory corruption 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

hey,

`_nx_snmp_utility_object_id_get` in the NetX Duo SNMP addon does not validate the claimed OID data length against the actual buffer size when the OID uses BER multibyte length encoding, so a remote attacker can send a crafted SNMP packet with a multibyte OID length larger than the available buffer, causing the parser to read past the packet buffer boundary into adjacent heap memory. the OOB bytes are decoded as OID component values and written into the agents internal OID string buffer, corrupting agent state. on systems with memory protection the OOB read poses the risk of crashing the SNMP agent thread, causing denial of service. on bare metal embedded systems without memory protection the read silently succeeds and corrupts the agents internal state with heap data.

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

## Which versions are affected by CVE-2026-102718?


## How do I fix CVE-2026-102718?

No fix has been published for CVE-2026-102718 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-102718 being exploited?

There is no known exploitation of CVE-2026-102718 in the wild and no public exploit code.

Public exploit code:

- Out-of-bounds read in the NetX Duo SNMP OID parser via a multi-byte BER length. (github_poc): https://github.com/D7EAD/CVE-2026-102718

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-102718 and fix it if it is affected.

What it is: CVE-2026-102718 is a high-severity memory corruption 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-2026-102718 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-2026-102718/ (Markdown: https://insights.sbomify.com/CVE-2026-102718/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-102718
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-102718
- OSV: https://osv.dev/vulnerability/CVE-2026-102718

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-102718/
Summaries are generated and may contain mistakes; the official description above is the record.