CVE-2022-3407

Call denial via USB-tethered modem reset

Published Sep 1, 2023 · Updated Sep 27, 2024

Improper resource shutdown in Motorola smartphone modem firmware before 2022-11-01 allows physically proximate attackers to interrupt calls. While USB tethering shares the mobile connection, originating a call resets the modem instead of preserving service; Motorola does not disclose the mishandled resource. The device must be tethered and sharing its mobile network, and a user must originate a call; the resulting reset interrupts the call, including an attempted emergency call.

CVSS severity4.9
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper resource shutdown in Motorola smartphone modem firmware before 2022-11-01 allows physically proximate attackers to interrupt calls. While USB tethering shares the mobile connection, originating a call resets the modem instead of preserving service; Motorola does not disclose the mishandled resource. The device must be tethered and sharing its mobile network, and a user must originate a call; the resulting reset interrupts the call, including an attempted emergency call.

The record

CVE
CVE-2022-3407
Published
Sep 1, 2023
Updated
Sep 27, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-404, T1499
Attack vector
physical
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 1, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 27, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorphysical
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.9Lenovo Group Ltd.CVSS:3.1/AV:P/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H
4.3NIST NVDCVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:N/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
T1499Endpoint Denial of Service

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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