CVE-2026-21384: CWE-787: Out-of-bounds Write in Qualcomm, Inc. Snapdragon
Memory Corruption when updating prepared commands with invalid port indices based on user space input exceeds supported read client limits.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-21384) is classified as CWE-787 (Out-of-bounds Write) and affects various Qualcomm Snapdragon products. It arises from memory corruption triggered by updating prepared commands with invalid port indices based on user input that exceeds supported read client limits. The vulnerability has a CVSS 3.1 base score of 5.3, indicating medium severity, with attack vector local, high attack complexity, low privileges required, no user interaction, and impacts confidentiality, integrity, and availability. There is no vendor advisory or patch information available at this time.
Potential Impact
Successful exploitation could lead to memory corruption, potentially allowing an attacker with local access and low privileges to affect confidentiality, integrity, and availability of the affected system. The medium CVSS score reflects moderate impact and exploitation complexity. There are no known exploits in the wild currently.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, limit local access to trusted users and monitor for updates from Qualcomm regarding patches or mitigations.
CVE-2026-21384: CWE-787: Out-of-bounds Write in Qualcomm, Inc. Snapdragon
Description
Memory Corruption when updating prepared commands with invalid port indices based on user space input exceeds supported read client limits.
CVSS v3.1
Score 5.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-21384) is classified as CWE-787 (Out-of-bounds Write) and affects various Qualcomm Snapdragon products. It arises from memory corruption triggered by updating prepared commands with invalid port indices based on user input that exceeds supported read client limits. The vulnerability has a CVSS 3.1 base score of 5.3, indicating medium severity, with attack vector local, high attack complexity, low privileges required, no user interaction, and impacts confidentiality, integrity, and availability. There is no vendor advisory or patch information available at this time.
Potential Impact
Successful exploitation could lead to memory corruption, potentially allowing an attacker with local access and low privileges to affect confidentiality, integrity, and availability of the affected system. The medium CVSS score reflects moderate impact and exploitation complexity. There are no known exploits in the wild currently.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, limit local access to trusted users and monitor for updates from Qualcomm regarding patches or mitigations.
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: 6a4c11fa27e9c797192edf26
Added to database: 07/06/2026, 20:37:14 UTC
Last enriched: 07/14/2026, 09:02:48 UTC
Last updated: 08/20/2026, 22:52:11 UTC
Views: 82
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