Which versions of H3C ACG1000-AK230 are affected by CVE-2026-3943?

A high-severity vulnerability (CVSS 7.3) affects H3C ACG1000-AK230 devices with no patch currently available, putting organizations using this load balancer at risk of potential compromise.

How to fix or mitigate CVE-2026-3943?

Within 24 hours: Inventory all H3C ACG1000-AK230 devices in production and verify affected versions (up to 20260227); enable enhanced logging and monitoring on these devices. Within 7 days: Implement network segmentation to restrict access to ACG devices to authorized administrators only; deploy WAF rules if applicable to filter suspicious traffic patterns; contact H3C for security guidance and patch availability timeline. Within 30 days: Develop and execute a remediation plan including device replacement, upgrade to patched versions when available, or architectural changes to reduce exposure; document all compensating controls and their effectiveness.

H3C ACG1000-AK230 CVE-2026-3943

Q: What is the CVSS score of CVE-2026-3943?

CVE-2026-3943 has a CVSS 4.0 base score of 5.5 (Medium). CVSS vector: 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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.3%.

MEDIUM

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (CWE-74)

2026-03-11 cna@vuldb.com

Command Injection

5.5

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

CVSS changed

Apr 29, 2026 - 01:11 NVD

6.9 (MEDIUM) 5.5 (MEDIUM)

Severity Changed

Apr 22, 2026 - 21:37 NVD

HIGH MEDIUM

CVSS changed

Apr 22, 2026 - 21:37 NVD

7.3 (HIGH) 6.9 (MEDIUM)

Analysis Generated

Mar 12, 2026 - 22:06 vuln.today

CVE Published

Mar 11, 2026 - 13:16 nvd

HIGH 7.3

DescriptionCVE.org

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.

AnalysisAI

Command injection in H3C ACG1000-AK230 through the /webui/?aaa_portal_auth_local_submit endpoint allows unauthenticated remote attackers to execute arbitrary commands by manipulating the suffix parameter. Public exploit code exists for this vulnerability, which affects versions up to 20260227 with no patch currently available. The vulnerability carries a CVSS score of 7.3 and provides attackers with partial access to confidentiality, integrity, and availability.

Technical ContextAI

affects A vulnerability was found in H3C ACG1000-AK230. 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.