CVE-2025-21477

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

CVE

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

HIGH · CVSS 7.5 EPSS 0.00381

Schedule remediation

SSVC automatable: yes - attacks can be scripted at scale
CVSS base score ≥ 7.0

Sigma rules0 YARA rules0

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Weakness Classification

CWE-20Improper Input Validation

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Affected Products & Versions

qualcomm 315 5g iot modem firmwareall versions
qualcomm ar8035 firmwareall versions
qualcomm fastconnect 6200 firmwareall versions
qualcomm fastconnect 6700 firmwareall versions
qualcomm fastconnect 6800 firmwareall versions
qualcomm fastconnect 6900 firmwareall versions
qualcomm fastconnect 7800 firmwareall versions
qualcomm qca6391 firmwareall versions
Show all 60 affected productsqualcomm qca6574a firmwareall versions
qualcomm qca6584au firmwareall versions
qualcomm qca6595au firmwareall versions
qualcomm qca6696 firmwareall versions
qualcomm qca6698aq firmwareall versions
qualcomm qca8081 firmwareall versions
qualcomm qca8337 firmwareall versions
qualcomm qcc710 firmwareall versions
qualcomm qcm5430 firmwareall versions
qualcomm qcm6490 firmwareall versions
qualcomm qcn6024 firmwareall versions
qualcomm qcn6224 firmwareall versions
qualcomm qcn6274 firmwareall versions
qualcomm qcn9024 firmwareall versions
qualcomm qcs5430 firmwareall versions
qualcomm qcs6490 firmwareall versions
qualcomm qcs8550 firmwareall versions
qualcomm qfw7114 firmwareall versions
qualcomm qfw7124 firmwareall versions
qualcomm video collaboration vc3 platform firmwareall versions
qualcomm sdx55 firmwareall versions
qualcomm sdx57m firmwareall versions
qualcomm sg8275p firmwareall versions
qualcomm sm7250p firmwareall versions
qualcomm sm7325p firmwareall versions
qualcomm sm7675 firmwareall versions
qualcomm sm7675p firmwareall versions
qualcomm sm8550p firmwareall versions
qualcomm sm8635 firmwareall versions
qualcomm sm8635p firmwareall versions
qualcomm snapdragon 4 gen 1 mobile platform firmwareall versions
qualcomm snapdragon 480 5g mobile platform firmwareall versions
qualcomm snapdragon 480\+ 5g mobile platform \(sm4350-ac\) firmwareall versions
qualcomm snapdragon 690 5g mobile platform firmwareall versions
qualcomm snapdragon 695 5g mobile platform firmwareall versions
qualcomm snapdragon 765 5g mobile platform \(sm7250-aa\) firmwareall versions
qualcomm snapdragon 765g 5g mobile platform \(sm7250-ab\) firmwareall versions
qualcomm snapdragon 768g 5g mobile platform \(sm7250-ac\) firmwareall versions
qualcomm snapdragon 778g 5g mobile platform firmwareall versions
qualcomm snapdragon 778g\+ 5g mobile platform \(sm7325-ae\) firmwareall versions
qualcomm snapdragon 780g 5g mobile platform firmwareall versions
qualcomm snapdragon 782g mobile platform \(sm7325-af\) firmwareall versions
qualcomm snapdragon 7c\+ gen 3 compute firmwareall versions
qualcomm snapdragon 8 gen 1 mobile platform firmwareall versions
qualcomm snapdragon 8 gen 2 mobile platform firmwareall versions
qualcomm snapdragon 8 gen 3 mobile platform firmwareall versions
qualcomm snapdragon 8\+ gen 1 mobile platform firmwareall versions
qualcomm snapdragon 8\+ gen 2 mobile platform firmwareall versions
qualcomm snapdragon 865 5g mobile platform firmwareall versions
qualcomm snapdragon 865\+ 5g mobile platform \(sm8250-ab\) firmwareall versions
qualcomm snapdragon 870 5g mobile platform \(sm8250-ac\) firmwareall versions
qualcomm snapdragon 888 5g mobile platform firmwareall versions

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Scoring & Timeline

7.5

HIGH · CVSS v3.1 · product-security@qualcomm.com

View on NVD

Attack Vector

Network Adjacent Local Physical

Attack Complexity

Low High

Privileges Required

None Low High

User Interaction

None Required

Scope

Unchanged Changed

Confidentiality

None Low High

Integrity

None Low High

Availability

None Low High

Published to NVD06 Aug 2025 · 08:15 AM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC triage · cisa-vulnrichment

Exploitation

none

Automatable

yes

Technical impact

partial

SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.

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Vendor Advisories

android-securityANDROID-2025-09-01High

🔗

References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

https://docs.qualcomm.com/product/publicresources/securitybulletin/august-2025-bulletin.htmlVendor Advisory

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NVD CVE.org CISA Vulners Exploit-DB GitHub PoC VulnCheck KEV GreyNoise

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