What is CVE-2026-3943?

CVE-2026-3943 is a high-severity vulnerability in H3c Acg1000-Ak230, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.3/10. Published 2026-03-11.

How severe is CVE-2026-3943?

High severity. CVSS v3 base score is 7.3 out of 10.

RCE in H3c Acg1000-Ak230

CVE-2026-3943

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.

Published 2026-03-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.046 (91.4th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.395 · newest: 0.046 · change: -0.348

Affected products

H3c Acg1000-Ak230 — versions 20260227

Weakness classification (CWE)

References

vuldb.com/ (technical-description, vdb-entry)
vuldb.com/ (signature, permissions-required)
vuldb.com/ (third-party-advisory)
github.com/leeyper/CVE/issues/1 (issue-tracking, exploit)

Frequently asked questions

What is CVE-2026-3943?: CVE-2026-3943 is a high-severity vulnerability in H3c Acg1000-Ak230, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.3/10. Published 2026-03-11.
How severe is CVE-2026-3943?: High severity. CVSS v3 base score is 7.3 out of 10.