CVE-2023-32890Network attack vector

Remote service interruption via EMM NULL pointer dereference

Published Jan 2, 2024 · Updated Aug 2, 2024

A NULL pointer dereference in modem EMM on MediaTek chipsets running Modem LR12A allows remote attackers to crash affected devices. The EMM implementation improperly validates a network message and dereferences a NULL pointer; MediaTek has not disclosed the specific field or code path. No privileges or user interaction are required, and the bounded consequence is a system crash that interrupts service.

CVSS severity7.5
High
EPSS probability0.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A NULL pointer dereference in modem EMM on MediaTek chipsets running Modem LR12A allows remote attackers to crash affected devices. The EMM implementation improperly validates a network message and dereferences a NULL pointer; MediaTek has not disclosed the specific field or code path. No privileges or user interaction are required, and the bounded consequence is a system crash that interrupts service.

The record

CVE
CVE-2023-32890
Published
Jan 2, 2024
Updated
Aug 2, 2024
Vendor
MediaTek
Product
MT8667
Classifications
CWE-476, CWE-20, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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?

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

  1. Affected versionversion=LR13
  2. Affected versionversion=Modem LR12A
  3. Affected versionversion=NR15
  4. Affected versionversion=NR16
  5. Affected versionversion=NR17

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MediaTek · MT8667version=LR13; version=Modem LR12A; version=NR15; version=NR16; version=NR17
MediaTek · MT8768version=LR13; version=Modem LR12A; version=NR15; version=NR16; version=NR17
MediaTek · MT6769Tversion=LR13; version=Modem LR12A; version=NR15; version=NR16; version=NR17
MediaTek · MT2731version=LR13; version=Modem LR12A; version=NR15; version=NR16; version=NR17
MediaTek · MT6768version=LR13; version=Modem LR12A; version=NR15; version=NR16; version=NR17
MediaTek · MT8766version=LR13; version=Modem LR12A; version=NR15; version=NR16; version=NR17
MediaTek · MT6769version=LR13; version=Modem LR12A; version=NR15; version=NR16; version=NR17
MediaTek · MT8666version=LR13; version=Modem LR12A; version=NR15; version=NR16; version=NR17
MediaTek · MT8786version=LR13; version=Modem LR12A; version=NR15; version=NR16; version=NR17
MediaTek · MT8788version=LR13; version=Modem LR12A; version=NR15; version=NR16; version=NR17
MediaTek · MT6769Zversion=LR13; version=Modem LR12A; version=NR15; version=NR16; version=NR17
MediaTek · MT8765version=LR13; version=Modem LR12A; version=NR15; version=NR16; version=NR17
MediaTek · MT6767version=LR13; version=Modem LR12A; version=NR15; version=NR16; version=NR17

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.9CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
CWE-20Improper Input Validation
T1499.004Application or System Exploitation

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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