CVE-2023-43551: Improper Authentication in Multi-Mode Call Processor

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-06-03 · updated 2026-06-17
Weakness: CWE-287

Description

Cryptographic issue while performing attach with a LTE network, a rogue base station can skip the authentication phase and immediately send the Security Mode Command.

Affected products

Qualcomm 205 Mobile Firmware: all versions
Qualcomm 215 Mobile Firmware: all versions
Qualcomm 315 5G Iot Modem Firmware: all versions
Qualcomm 9205 Lte Modem Firmware: all versions
Qualcomm 9206 Lte Modem Firmware: all versions
Qualcomm 9207 Lte Modem Firmware: all versions
Qualcomm Apq8017 Firmware: all versions
Qualcomm Apq8037 Firmware: all versions
Qualcomm Aqt1000 Firmware: all versions
Qualcomm Ar6003 Firmware: all versions
Qualcomm Ar8035 Firmware: all versions
Qualcomm C-V2X 9150 Firmware: all versions
Qualcomm Csra6620 Firmware: all versions
Qualcomm Csra6640 Firmware: all versions
Qualcomm Csrb31024 Firmware: all versions
Qualcomm Fastconnect 6200 Firmware: all versions
Qualcomm Fastconnect 6700 Firmware: all versions
Qualcomm Fastconnect 6800 Firmware: all versions
Qualcomm Fastconnect 6900 Firmware: all versions
Qualcomm Fastconnect 7800 Firmware: all versions
Qualcomm Mdm8207 Firmware: all versions
Qualcomm Mdm9205S Firmware: all versions
Qualcomm Mdm9230 Firmware: all versions
Qualcomm Mdm9250 Firmware: all versions
Qualcomm Mdm9330 Firmware: all versions
Qualcomm Mdm9615 Firmware: all versions
Qualcomm Mdm9628 Firmware: all versions
Qualcomm Mdm9630 Firmware: all versions
Qualcomm Mdm9640 Firmware: all versions
Qualcomm Msm8108 Firmware: all versions

References

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