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CVE-2026-21379— Buffer Over-read in Windows Compute

Quick assessment

Affected
Qualcomm, Inc. Snapdragon
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Qualcomm Chipsets是美国Qualcomm公司的一系列芯片组。 Qualcomm Chipsets存在缓冲区错误漏洞，该漏洞源于分配超出最大允许值大小的内存时可能导致内存损坏。以下版本受到影响：AQT1000版本、Cologne版本、FastConnect 6200版本、FastConnect 6700版本、FastConnect 6800版本、FastConnect 6900版本、FastConnect 7800版本、IQX5121版本、IQX7181版本、QCA0000版本、QCA639

CVSS 7.8 · High EPSS 0.10% · P1

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 47

VendorProduct Version RangeStatus
Qualcomm, Inc. Snapdragon AQT1000 affected
Cologne affected
FastConnect 6200 affected
FastConnect 6700 affected
FastConnect 6800 affected
FastConnect 6900 affected
FastConnect 7800 affected
IQX5121 affected
… +39 more rows
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I. Basic Information for CVE-2026-21379

Vulnerability Information
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Vulnerability Title
Buffer Over-read in Windows Compute
Source: CVE Program / CVE List V5
Vulnerability Description
Memory Corruption when allocating memory with sizes that exceed the maximum allowed value.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
缓冲区上溢读取
Source: CVE Program / CVE List V5
Vulnerability Title
Qualcomm Chipsets 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Qualcomm Chipsets是美国Qualcomm公司的一系列芯片组。 Qualcomm Chipsets存在缓冲区错误漏洞，该漏洞源于分配超出最大允许值大小的内存时可能导致内存损坏。以下版本受到影响：AQT1000版本、Cologne版本、FastConnect 6200版本、FastConnect 6700版本、FastConnect 6800版本、FastConnect 6900版本、FastConnect 7800版本、IQX5121版本、IQX7181版本、QCA0000版本、QCA639
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Qualcomm, Inc. Snapdragon AQT1000 -

II. Public POCs for CVE-2026-21379

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III. Intelligence Information for CVE-2026-21379

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Vendor Advisories for CVE-2026-21379 (1)

Same Patch Batch · Qualcomm, Inc. · 2026-07-06 · 11 CVEs total

CVE-2026-25268 8.8 HIGH Stack-based Buffer Overflow in WLAN Host
CVE-2026-25271 7.8 HIGH Time-of-check Time-of-use (TOCTOU) Race Condition in DSP Service
CVE-2026-21383 7.1 HIGH Reusing a Nonce, Key Pair in Encryption in HLOS
CVE-2025-59617 6.6 MEDIUM Use After Free in Computer Vision
CVE-2025-59616 6.6 MEDIUM Use After Free in Computer Vision
CVE-2025-59615 6.6 MEDIUM Use After Free in Computer Vision
CVE-2026-21384 5.3 MEDIUM Out-of-bounds Write in Camera Driver
CVE-2026-21370 5.3 MEDIUM Out-of-bounds Write in Camera Driver
CVE-2026-21369 5.3 MEDIUM Out-of-bounds Write in Camera Driver
CVE-2026-21368 5.3 MEDIUM Out-of-bounds Write in Camera Driver

IV. Related Vulnerabilities

Same product: Snapdragon
Same vendor: Qualcomm, Inc.
Same weakness: CWE-126