CVE-2025-2763

Root code execution via unverified USB updates

Published Apr 23, 2025 · Updated Apr 23, 2025

Improper signature verification in CarlinKit CPC200-CCPA 2024.01.19.1541 allows physically proximate attackers to execute code as root. The USB-drive update handler accepts an update package without properly verifying its cryptographic signature before execution. Physical access to the device and a crafted USB drive are required; successful exploitation grants root-level control of the adapter.

CVSS severity6.8
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper signature verification in CarlinKit CPC200-CCPA 2024.01.19.1541 allows physically proximate attackers to execute code as root. The USB-drive update handler accepts an update package without properly verifying its cryptographic signature before execution. Physical access to the device and a crafted USB drive are required; successful exploitation grants root-level control of the adapter.

The record

CVE
CVE-2025-2763
Published
Apr 23, 2025
Updated
Apr 23, 2025
Vendor
CarlinKit
Product
CarlinKit CPC200-CCPA
Classifications
CWE-347, T1203
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 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=2024.01.19.1541

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

CarlinKit · CarlinKit CPC200-CCPAversion=2024.01.19.1541

Published CVSS scores

6.8Zero Day InitiativeCVSS:3.0/AV:P/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-347Improper Verification of Cryptographic Signature
T1203Exploitation for Client Execution

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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