CVE-2022-23768
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedThis Vulnerability in NIS-HAP11AC is caused by an exposed external port for the telnet service. Remote attackers use this vulnerability to induce all attacks such as source code hijacking, remote control of the device.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceThe NIS-HAP11AC device has an exposed telnet service on an external port, allowing remote unauthenticated attackers to connect to the device via telnet and potentially execute commands, hijack the device, or gain remote control.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 3.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify the device firmware versionAccess the device admin interface or check the device label/documentation to determine the installed firmware version. Compare this to version 3.0.Affected if The device is running Neoinfosys Nis Hap11ac firmware version 3.0
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Scan for open telnet portUse a network port scanner (such as nmap) to scan the device for open TCP port 23 (telnet) or any unexpected telnet-like service ports.Affected if Telnet port 23 or an alternate telnet port is open and listening on the device
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Verify telnet service accessibilityAttempt to establish a telnet connection to the device from an external network location using: telnet [device IP]Affected if A telnet connection can be established without authentication credentials
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Check network exposureReview firewall rules and network configuration to determine if the telnet port is exposed to untrusted/external networks (Internet-facing) rather than only accessible from trusted internal networks.Affected if The telnet service is accessible from untrusted/external network segments
You are affected if you are running Nis Hap11ac firmware version 3.0 AND the telnet service is exposed and accessible on your device.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataDisable the telnet service on the device or block external access to the telnet port via firewall rules. If a firmware update is available from the vendor, apply it.
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,272.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-23768 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2022-23768 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data