CVE-2022-23768

Unauthenticated device control via exposed Telnet

Published Sep 19, 2022 · Updated Jun 3, 2025

Improper access control in Neo Information Systems Home AP NIS-HAP11AC 3.0-B20201117095902 allows remote attackers to control the device. The firmware exposes its Telnet service on an external port without restricting access to authorized users. Unauthenticated attackers on an adjacent network can take remote control of the appliance and alter its operation.

CVSS severity9.8
Critical
EPSS probability0.99%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Neo Information Systems Home AP NIS-HAP11AC 3.0-B20201117095902 allows remote attackers to control the device. The firmware exposes its Telnet service on an external port without restricting access to authorized users. Unauthenticated attackers on an adjacent network can take remote control of the appliance and alter its operation.

The record

CVE
CVE-2022-23768
Published
Sep 19, 2022
Updated
Jun 3, 2025
Vendor
Neo Information Systems Co., Ltd
Product
Home AP NIS-HAP11AC
Classifications
CWE-284, T1190
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 19, 2022CVE publishedPublication date reported by the CVE source.
  2. Jun 3, 2025Record 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=V3.0-B20201117095902

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Neo Information Systems Co., Ltd · Home AP NIS-HAP11ACversion=V3.0-B20201117095902

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8KrCERT/CCCVSS:3.1/AV:A/AC:L/PR:N/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.

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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 exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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