CVE-2025-21452

Home/CVE/Transient DOS while processing a random-access response (RAR) with an invalid PDU length on LTE network.

CVE

Transient DOS while processing a random-access response (RAR) with an invalid PDU length on LTE network.

HIGH · CVSS 7.5 EPSS 0.00145

Schedule remediation

CVSS base score ≥ 7.0

Sigma rules0 YARA rules0

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Weakness Classification

CWE-617Reachable Assertion

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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 fsm10055 firmwareall versions
qualcomm qca6174a firmwareall versions
Show all 60 affected productsqualcomm qca6391 firmwareall versions
qualcomm qca6421 firmwareall versions
qualcomm qca6426 firmwareall versions
qualcomm qca6431 firmwareall versions
qualcomm qca6436 firmwareall versions
qualcomm qca6574a firmwareall versions
qualcomm qca6574au firmwareall versions
qualcomm qca6595au firmwareall versions
qualcomm qca6696 firmwareall versions
qualcomm qca6698aq firmwareall versions
qualcomm qca8337 firmwareall versions
qualcomm qcm5430 firmwareall versions
qualcomm qcm6490 firmwareall versions
qualcomm qcs5430 firmwareall versions
qualcomm qcs6490 firmwareall versions
qualcomm qep8111 firmwareall versions
qualcomm video collaboration vc3 platform firmwareall versions
qualcomm sd855 firmwareall versions
qualcomm sd865 5g firmwareall versions
qualcomm sdx55 firmwareall versions
qualcomm sdx57m firmwareall versions
qualcomm sm6370 firmwareall versions
qualcomm sm6650 firmwareall versions
qualcomm sm7250p firmwareall versions
qualcomm sm7325p firmwareall versions
qualcomm sm7635 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 855 mobile platform firmwareall versions
qualcomm snapdragon 855\+\/860 mobile platform \(sm8150-ac\) 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
qualcomm snapdragon 888\+ 5g mobile platform \(sm8350-ac\) firmwareall versions
qualcomm snapdragon auto 5g modem-rf firmwareall versions
qualcomm snapdragon x35 5g modem-rf system firmwareall versions
qualcomm snapdragon x55 5g modem-rf system firmwareall versions
qualcomm snapdragon xr2 5g platform firmwareall versions
qualcomm sxr2130 firmwareall versions
qualcomm wcd9340 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

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.

🔗

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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