CVE-2024-3281Public exploit

Unauthenticated shell access via exposed ADB

Published Apr 9, 2024 · Updated Feb 13, 2025

Improper access control in HP Poly CCX Series firmware after 8.0.2.3267 and before 8.1.3.1301 allows remote attackers to obtain a shell. The firmware build leaves Android Debug Bridge listening on TCP port 5555 by default and accepts connections without authentication. An attacker with adjacent-network access to that port can enter an ADB shell, read device-accessible data, and execute commands on the phone.

CVSS severity8.8
High
EPSS probability0.50%
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 HP Poly CCX Series firmware after 8.0.2.3267 and before 8.1.3.1301 allows remote attackers to obtain a shell. The firmware build leaves Android Debug Bridge listening on TCP port 5555 by default and accepts connections without authentication. An attacker with adjacent-network access to that port can enter an ADB shell, read device-accessible data, and execute commands on the phone.

The record

CVE
CVE-2024-3281
Published
Apr 9, 2024
Updated
Feb 13, 2025
Vendor
Plantronics
Product
HP Poly CCX Series
Classifications
CWE-306, CWE-284, T1059.004, T1210
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=See HP Security Bulletin reference for affected versions.

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Plantronics · HP Poly CCX Seriesversion=See HP Security Bulletin reference for affected versions.

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H
8.8HP Inc.CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/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-306Missing Authentication for Critical Function
CWE-284Improper Access Control
T1059.004Command and Scripting Interpreter: Unix Shell
T1210Exploitation of Remote Services

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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