CVE-2026-21366: CWE-190 Integer Overflow or Wraparound in Qualcomm, Inc. Snapdragon
CVE-2026-21366 is a high-severity integer overflow vulnerability in Qualcomm Snapdragon chipsets QCA6595 and QCA6696. It involves memory corruption triggered by processing packets with sizes near the maximum allowed value. This flaw can lead to high impact on confidentiality, integrity, and availability. No official patch or remediation guidance is currently available from the vendor. There are no known exploits in the wild at this time.
AI Analysis
Technical Summary
This vulnerability, identified as CWE-190 (Integer Overflow or Wraparound), occurs in Qualcomm Snapdragon chipsets QCA6595 and QCA6696. It arises when processing a packet whose size approaches the maximum allowed value, causing an integer overflow that leads to memory corruption. The CVSS v3.1 base score is 7.8, indicating a high severity with local attack vector, low attack complexity, requiring low privileges and no user interaction, and impacts confidentiality, integrity, and availability. The vendor has not provided a remediation level or patch information as of the published date.
Potential Impact
Successful exploitation can result in memory corruption, potentially allowing an attacker with local access and low privileges to compromise confidentiality, integrity, and availability of the affected device. This could lead to unauthorized data access, modification, or denial of service conditions on devices using the affected Snapdragon chipsets.
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 affected devices and monitor for unusual behavior. No vendor-provided mitigations or temporary fixes are currently documented.
CVE-2026-21366: CWE-190 Integer Overflow or Wraparound in Qualcomm, Inc. Snapdragon
Description
CVE-2026-21366 is a high-severity integer overflow vulnerability in Qualcomm Snapdragon chipsets QCA6595 and QCA6696. It involves memory corruption triggered by processing packets with sizes near the maximum allowed value. This flaw can lead to high impact on confidentiality, integrity, and availability. No official patch or remediation guidance is currently available from the vendor. There are no known exploits in the wild at this time.
CVSS v3.1
Score 7.8high
Affected software
Qualcomm, Inc.
Snapdragon
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CWE-190 (Integer Overflow or Wraparound), occurs in Qualcomm Snapdragon chipsets QCA6595 and QCA6696. It arises when processing a packet whose size approaches the maximum allowed value, causing an integer overflow that leads to memory corruption. The CVSS v3.1 base score is 7.8, indicating a high severity with local attack vector, low attack complexity, requiring low privileges and no user interaction, and impacts confidentiality, integrity, and availability. The vendor has not provided a remediation level or patch information as of the published date.
Potential Impact
Successful exploitation can result in memory corruption, potentially allowing an attacker with local access and low privileges to compromise confidentiality, integrity, and availability of the affected device. This could lead to unauthorized data access, modification, or denial of service conditions on devices using the affected Snapdragon chipsets.
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 affected devices and monitor for unusual behavior. No vendor-provided mitigations or temporary fixes are currently documented.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- qualcomm
- Date Reserved
- 2025-12-17T04:35:45.741Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a72084abf8831d5390c151d
Added to database: 08/04/2026, 15:42:02 UTC
Last enriched: 08/11/2026, 18:01:16 UTC
Last updated: 09/19/2026, 10:01:30 UTC
Views: 32
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