CVE-2026-21375

Home/CVE/Memory Corruption when accessing an output buffer without validating its size during IOCTL processing.

CVE

Memory Corruption when accessing an output buffer without validating its size during IOCTL processing.

HIGH · CVSS 7.8 EPSS 0.00015

Schedule remediation

CVSS base score ≥ 7.0

Sigma rules0 YARA rules0

⬡

Weakness Classification

CWE-126Buffer Over-read

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Affected Products & Versions

qualcomm cologne firmwareall versions
qualcomm fastconnect 6700 firmwareall versions
qualcomm fastconnect 6900 firmwareall versions
qualcomm fastconnect 7800 firmwareall versions
qualcomm qca0000 firmwareall versions
qualcomm qcm5430 firmwareall versions
qualcomm qcm6490 firmwareall versions
qualcomm video collaboration vc3 platform firmwareall versions
Show all 35 affected productsqualcomm sc8380xp firmwareall versions
qualcomm snapdragon 460 mobile platform firmwareall versions
qualcomm snapdragon 662 mobile platform firmwareall versions
qualcomm snapdragon 7c\+ gen 3 compute firmwareall versions
qualcomm snapdragon 8cx gen 3 compute platform firmwareall versions
qualcomm snapdragon ar1 gen 1 platform firmwareall versions
qualcomm wcd9370 firmwareall versions
qualcomm wcd9375 firmwareall versions
qualcomm wcd9378c firmwareall versions
qualcomm wcd9380 firmwareall versions
qualcomm wcd9385 firmwareall versions
qualcomm wcn3950 firmwareall versions
qualcomm wcn3988 firmwareall versions
qualcomm wsa8830 firmwareall versions
qualcomm wsa8832 firmwareall versions
qualcomm wsa8835 firmwareall versions
qualcomm wsa8840 firmwareall versions
qualcomm wsa8845 firmwareall versions
qualcomm wsa8845h firmwareall versions
qualcomm x2000077 firmwareall versions
qualcomm x2000086 firmwareall versions
qualcomm x2000090 firmwareall versions
qualcomm x2000092 firmwareall versions
qualcomm x2000094 firmwareall versions
qualcomm xg101002 firmwareall versions
qualcomm xg101032 firmwareall versions
qualcomm xg101039 firmwareall versions

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Scoring & Timeline

7.8

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 Apr 2026 · 04:16 PM

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

SSVC triage · cisa-vulnrichment

Exploitation

none

Automatable

Technical impact

total

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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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/april-2026-bulletin.htmlVendor Advisory

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CVETechnique ActorTool Family

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External lookups - second-class, for what we don’t hold ourselves

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

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NIST 800-53
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