Memory corruption via oversized allocation request
Published Jul 6, 2026 · Updated Jul 6, 2026
Buffer over-read in Windows Compute in Qualcomm Snapdragon allows local users to corrupt memory through an oversized allocation request. Windows Compute mishandles an allocation size above the allowed maximum, resulting in an out-of-bounds read; Qualcomm has not identified the affected function or call path. The condition requires existing low-privileged local access and no user interaction, and successful exploitation corrupts memory within the affected device.
Summary
What happened
Buffer over-read in Windows Compute in Qualcomm Snapdragon allows local users to corrupt memory through an oversized allocation request. Windows Compute mishandles an allocation size above the allowed maximum, resulting in an out-of-bounds read; Qualcomm has not identified the affected function or call path. The condition requires existing low-privileged local access and no user interaction, and successful exploitation corrupts memory within the affected device.
The record
- CVE
- CVE-2026-21379
- Published
- Jul 6, 2026
- Updated
- Jul 6, 2026
- Vendor
- Qualcomm
- Product
- Snapdragon
- Classifications
- CWE-126
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 6, 2026CVE publishedPublication date reported by the CVE source.
- Jul 6, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=AQT1000
- Affected versionversion=Cologne
- Affected versionversion=FastConnect 6200
- Affected versionversion=FastConnect 6700
- Affected versionversion=FastConnect 6800
- Affected versionversion=FastConnect 6900
- Affected versionversion=FastConnect 7800
- Affected versionversion=IQX5121
- Affected versionversion=IQX7181
- Affected versionversion=QCA0000
- Affected versionversion=QCA6391
- Affected versionversion=QCA6420
- Affected versionversion=QCA6430
- Affected versionversion=QCM5430
- Affected versionversion=QCM6490
- Affected versionversion=Qualcomm Video Collaboration VC3 Platform
- Affected versionversion=SC8380XP
- Affected versionversion=Snapdragon 7c+ Gen 3 Compute
- Affected versionversion=Snapdragon 8c Compute Platform "Poipu Lite"
- Affected versionversion=Snapdragon 8c Compute Platform (SC8180XP-AD) "Poipu Lite"
- Affected versionversion=Snapdragon 8cx Compute Platform
- Affected versionversion=Snapdragon 8cx Compute Platform "Poipu Pro"
- Affected versionversion=Snapdragon 8cx Gen 2 5G Compute Platform
- Affected versionversion=Snapdragon 8cx Gen 2 5G Compute Platform "Poipu Pro"
- Affected versionversion=Snapdragon 8cx Gen 3 Compute Platform
- Affected versionversion=WCD9340
- Affected versionversion=WCD9341
- Affected versionversion=WCD9370
- Affected versionversion=WCD9375
- Affected versionversion=WCD9378C
- Affected versionversion=WCD9380
- Affected versionversion=WCD9385
- Affected versionversion=WSA8810
- Affected versionversion=WSA8815
- Affected versionversion=WSA8830
- Affected versionversion=WSA8835
- Affected versionversion=WSA8840
- Affected versionversion=WSA8845
- Affected versionversion=WSA8845H
- Affected versionversion=X2000077
- Affected versionversion=X2000086
- Affected versionversion=X2000090
- Affected versionversion=X2000092
- Affected versionversion=X2000094
- Affected versionversion=XG101002
- Affected versionversion=XG101032
- Affected versionversion=XG101039
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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