CVE-2026-21379: CWE-126 Buffer Over-read in Qualcomm, Inc. Snapdragon
Memory Corruption when allocating memory with sizes that exceed the maximum allowed value.
AI Analysis
Technical Summary
This vulnerability in Qualcomm Snapdragon components is caused by improper handling of memory allocation requests that exceed maximum allowed sizes, leading to buffer over-read and memory corruption. The CVSS 3.1 base score is 7.8, indicating high severity with impacts on confidentiality, integrity, and availability. The attack vector requires local access with low privileges and no user interaction. The vendor has published the vulnerability but has not yet provided an official fix or remediation level. Multiple Snapdragon hardware versions are affected as explicitly listed.
Potential Impact
Successful exploitation can result in memory corruption, potentially leading to unauthorized disclosure of information, modification of data, or denial of service. The CVSS vector indicates high impact on confidentiality, integrity, and availability. However, exploitation requires local access with low privileges and no user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary mitigation has been provided by Qualcomm at this time.
CVE-2026-21379: CWE-126 Buffer Over-read in Qualcomm, Inc. Snapdragon
Description
Memory Corruption when allocating memory with sizes that exceed the maximum allowed value.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Qualcomm Snapdragon components is caused by improper handling of memory allocation requests that exceed maximum allowed sizes, leading to buffer over-read and memory corruption. The CVSS 3.1 base score is 7.8, indicating high severity with impacts on confidentiality, integrity, and availability. The attack vector requires local access with low privileges and no user interaction. The vendor has published the vulnerability but has not yet provided an official fix or remediation level. Multiple Snapdragon hardware versions are affected as explicitly listed.
Potential Impact
Successful exploitation can result in memory corruption, potentially leading to unauthorized disclosure of information, modification of data, or denial of service. The CVSS vector indicates high impact on confidentiality, integrity, and availability. However, exploitation requires local access with low privileges and no user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary mitigation has been provided by Qualcomm at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- qualcomm
- Date Reserved
- 2025-12-17T04:35:45.743Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a4c11fa27e9c797192edf20
Added to database: 07/06/2026, 20:37:14 UTC
Last enriched: 07/06/2026, 20:54:16 UTC
Last updated: 07/07/2026, 03:35:01 UTC
Views: 9
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