CVE-2023-0011
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 · uneditedA flaw in the input validation in TOBY-L2 allows a user to execute arbitrary operating system commands using specifically crafted AT commands. This vulnerability requires physical access to the serial interface of the module or the ability to modify the system or software which uses its serial interface to send malicious AT commands. Exploitation of the vulnerability gives full administrative (root) privileges to the attacker to execute any operating system command on TOBY-L2 which can lead to modification of the behavior of the module itself as well as the components connected with it (depending on its rights on other connected systems). It can further provide the ability to read system level files and hamper the availability of the module as well.. This issue affects TOBY-L2 series: TOBY-L200, TOBY-L201, TOBY-L210, TOBY-L220, TOBY-L280.
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 confidenceA command injection vulnerability in TOBY-L2 LTE modules allows attackers with physical serial access or control over systems sending AT commands to execute arbitrary OS commands with root privileges, enabling full system compromise including reading sensitive files and modifying module behavior.
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 dataall versionsall versionsall versionsall versionsall versionsCVSS 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
- Physical
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:P/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 TOBY-L2 module modelCheck hardware labeling, procurement records, or send AT command 'AT+CGMM' to query the device model. Look for Toby-L200, Toby-L201, Toby-L210, Toby-L220, or Toby-L280 identifiers.Affected if The device is one of these five models (L200, L201, L210, L220, L280)
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Confirm firmware versionSend AT command 'AT+CGMR' or 'AT+CGMR' to query the installed firmware version.Affected if All firmware versions are affected; version query confirms the device is a TOBY-L2 module
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Verify serial interface accessibilityInspect the hardware for exposed serial debug pins (typically a 6-pin or 10-pin header). Check if the device enclosure has been opened or if serial pads are accessible without tools.Affected if Physical serial interface pins are accessible or exposed
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Assess AT command attack surfaceIdentify all systems and interfaces that can send AT commands to the module. Review network connections, debug ports, and any software that interfaces with the module.Affected if The AT command interface is reachable from systems that could be compromised or are exposed to untrusted users
If you have a TOBY-L2 module (L200, L201, L210, L220, or L280) with accessible serial pins or AT command interfaces reachable from untrusted systems, you are affected by this vulnerability.
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 dataApply vendor firmware updates when available; restrict physical access to serial interfaces and ensure systems interfacing with AT commands are not compromised; network segmentation can limit lateral movement if the module is connected to broader networks.
- Consultation4.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-0011 — 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-2023-0011 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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- Version or environment caveats, and links to real fixes
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