# CVE-2026-3943: H3C ACG1000-AK230 aaa_portal_auth_local_submit command injection

> Remote attackers can execute arbitrary commands on H3C ACG1000-AK230 devices via the aaa_portal_auth_local_submit endpoint.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Mar 2026
- **Updated:** 12 Mar 2026
- **Also known as:** GHSA-2xx3-8jg7-cq2x

## What is CVE-2026-3943?

CVE-2026-3943 is a medium-severity command injection vulnerability in H3C ACG1000-AK230, published on 11 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability was found in H3C ACG1000-AK230 up to 20260227. This affects an unknown part of the file /webui/?aaa_portal_auth_local_submit. The manipulation of the argument suffix results in command injection. The attack can be launched remotely. The exploit has been made public and could be used. The vendor is investigating and remediating this issue.

Weakness: CWE-77 (Improper Neutralization of Special Elements used in a Command), CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component)

## Which versions are affected by CVE-2026-3943?


## How do I fix CVE-2026-3943?

No fix has been published for CVE-2026-3943 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-3943 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3943 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-3943 and fix it if it is affected.

What it is: CVE-2026-3943 is a medium-severity command injection vulnerability in H3C ACG1000-AK230, published on 11 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3943 exists.

Affected product: H3C ACG1000-AK230. 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-2026-3943/ (Markdown: https://insights.sbomify.com/CVE-2026-3943/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-3943
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-3943
- OSV: https://osv.dev/vulnerability/CVE-2026-3943

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-3943/
Summaries are generated and may contain mistakes; the official description above is the record.