CVE-2024-44667Public exploit

Root shell access via unauthenticated AT command injection

Published Sep 10, 2024 · Updated Jul 5, 2026

Incorrect authorization in HCX H822 Firmware M7628NNxISPxUIv2_v1.0.1557.15.35_P0 allows remote attackers to gain a root shell. The public technical reference identifies factory-mode reset and AT-command handling as the locus but does not disclose the exact request handler or validation failure. Network reach to the router permits device-information exposure and root-level command execution without an application login.

CVSS severity8.0
High
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in HCX H822 Firmware M7628NNxISPxUIv2_v1.0.1557.15.35_P0 allows remote attackers to gain a root shell. The public technical reference identifies factory-mode reset and AT-command handling as the locus but does not disclose the exact request handler or validation failure. Network reach to the router permits device-information exposure and root-level command execution without an application login.

The record

CVE
CVE-2024-44667
Published
Sep 10, 2024
Updated
Jul 5, 2026
Vendor
Shenzhen Haichangxing Technology Co., Ltd.
Product
HCX H822 Firmware
Classifications
CWE-863, T1190, T1059.008
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 10, 2024CVE publishedPublication date reported by the CVE source.
  2. Jul 5, 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=M7628NNxISPxUIv2_v1.0.1557.15.35_P0

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Shenzhen Haichangxing Technology Co., Ltd. · HCX H822 Firmwareversion=M7628NNxISPxUIv2_v1.0.1557.15.35_P0

Published CVSS scores

8.0CISA-ADPCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1190Exploit Public-Facing Application
T1059.008Network Device CLI

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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