What’s Vulnerable › Vulnerabilities

CVE-2025-21477: Improper Input Validation in Modem

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-08-06 · updated 2026-06-17
• Weakness: CWE-20

Description

Transient DOS while processing CCCH data when NW sends data with invalid length.

Affected products

• Qualcomm 315 5G Iot Modem Firmware: all versions
• Qualcomm Ar8035 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 Qca6391 Firmware: all versions
• Qualcomm Qca6574A Firmware: all versions
• Qualcomm Qca6584Au Firmware: all versions
• Qualcomm Qca6595Au Firmware: all versions
• Qualcomm Qca6696 Firmware: all versions
• Qualcomm Qca6698Aq Firmware: all versions
• Qualcomm Qca8081 Firmware: all versions
• Qualcomm Qca8337 Firmware: all versions
• Qualcomm Qcc710 Firmware: all versions
• Qualcomm Qcm5430 Firmware: all versions
• Qualcomm Qcm6490 Firmware: all versions
• Qualcomm Qcn6024 Firmware: all versions
• Qualcomm Qcn6224 Firmware: all versions
• Qualcomm Qcn6274 Firmware: all versions
• Qualcomm Qcn9024 Firmware: all versions
• Qualcomm Qcs5430 Firmware: all versions
• Qualcomm Qcs6490 Firmware: all versions
• Qualcomm Qcs8550 Firmware: all versions
• Qualcomm Qfw7114 Firmware: all versions
• Qualcomm Qfw7124 Firmware: all versions
• Qualcomm Sdx55 Firmware: all versions
• Qualcomm Sdx57M Firmware: all versions
• Qualcomm Sg8275P Firmware: all versions

References

• https://docs.qualcomm.com/product/publicresources/securitybulletin/august-2025-bulletin.html

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