Pax A930 FirmwareOperating system · Paxtechnology

CVE-2023-27198

MEDIUM · 6.8 CVSS v3.1 Published 2023-07-05
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
73/100
Remediation priority · Elevated
No privileges Zero-click

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 · unedited
PAX A930 device with PayDroid_7.1.1_Virgo_V04.5.02_20220722 can allow the execution of arbitrary commands by using the exec service and including a specific word in the command to be executed. The attacker must have physical USB access to the device in order to exploit this vulnerability.

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 · moderate confidence

The PAX A930 point-of-sale device running PayDroid_7.1.1_Virgo_V04.5.02_20220722 contains a command injection vulnerability in its exec service. An attacker with physical USB access can execute arbitrary commands by including a specific trigger word in the command string, bypassing intended restrictions on the exec service.

MitigationRestrict or disable the exec service functionality in the device firmware, implement strict input validation to prevent command injection, and distribute an updated firmware patch to affected devices. Physical access controls should also be reviewed to limit USB exposure.

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
Pax A930 FirmwareOperating system
Affected:= paydroid_7.1.1_virgo_v04.5.02_20220722

CVSS 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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify device model
    Verify the device is a PAX A930 point-of-sale terminal by checking the device model identifier in system settings or on the device hardware label
    Affected if Device is not a PAX A930 (not affected)
  2. Check firmware version
    Locate the firmware version information in the device settings or system information panel. Common paths include Settings > About Device > Firmware Version, or check the boot splash screen for version text
    Affected if Firmware version is exactly paydroid_7.1.1_virgo_v04.5.02_20220722 (this specific version is affected)
  3. Verify exec service presence
    Examine the device services or running processes list to determine if the exec service is installed and running on the device
    Affected if Exec service is not present or not running (not vulnerable since the attack requires this service)
  4. Assess physical USB access exposure
    Evaluate whether USB ports are accessible or exposed on the device in its deployment environment
    Affected if USB access is available and exec service is running on the affected firmware version (vulnerable to the documented attack vector)

A user is affected if their device is a PAX A930 running exactly firmware paydroid_7.1.1_virgo_v04.5.02_20220722 with the exec service enabled and physical USB access is possible.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Restrict or disable the exec service functionality in the device firmware, implement strict input validation to prevent command injection, and distribute an updated firmware patch to affected devices. Physical access controls should also be reviewed to limit USB exposure.

Fix this in Pax A930 Firmware Scoped from the published advisory
  • Consultation6.0 h
  • Implementation16.0 h
  • Testing12.0 h
  • Review / QA6.0 h
40.0 hours of engineering $6,960
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Scan for this in your stack

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dbcve dependency scanner

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-27198 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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