CVE-2026-3943Public exploitNetwork attack vector

Pre-auth command execution via unsanitized suffix parameter

Published Mar 11, 2026 · Updated Mar 11, 2026

Command injection in H3C SecPath ACG1000-AK230 20260227 allows remote attackers to execute arbitrary system commands without authentication. The aaa_portal_auth_local_submit handler inserts the suffix parameter into a system command without filtering shell metacharacters. A crafted GET request containing backticks reaches the web interface before login and runs commands with the web service's privileges.

CVSS severity7.3
High
EPSS probability39.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in H3C SecPath ACG1000-AK230 20260227 allows remote attackers to execute arbitrary system commands without authentication. The aaa_portal_auth_local_submit handler inserts the suffix parameter into a system command without filtering shell metacharacters. A crafted GET request containing backticks reaches the web interface before login and runs commands with the web service's privileges.

The record

CVE
CVE-2026-3943
Published
Mar 11, 2026
Updated
Mar 11, 2026
Vendor
New H3C Technologies Co., Ltd.
Product
H3C SecPath ACG1000-AK230
Classifications
CWE-77, CWE-74, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=20260227

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

New H3C Technologies Co., Ltd. · H3C SecPath ACG1000-AK230version=20260227

Published CVSS scores

7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P
5.5VulDBCVSS: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
7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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