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CVE-2026-21367: CWE-126 Buffer Over-read in Qualcomm, Inc. Snapdragon

0
High
VulnerabilityCVE-2026-21367cvecve-2026-21367cwe-126
Published: Mon Apr 06 2026 (04/06/2026, 15:33:46 UTC)
Source: CVE Database V5
Vendor/Project: Qualcomm, Inc.
Product: Snapdragon

Description

Transient DOS when processing nonstandard FILS Discovery Frames with out-of-range action sizes during initial scans.

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 04/06/2026, 16:46:35 UTC

Technical Analysis

This vulnerability involves a buffer over-read condition in Qualcomm Snapdragon devices triggered by processing malformed FILS Discovery Frames containing out-of-range action sizes during initial scanning phases. The issue results in a transient denial of service, impacting device availability. It affects numerous Snapdragon platforms and related wireless components. The CVSS v3.1 base score is 7.6 (high), reflecting network attack vector, high privileges required, user interaction needed, and potential for complete confidentiality, integrity, and availability impact. No vendor advisory or patch information is currently available.

Potential Impact

Successful exploitation causes a transient denial of service on affected Qualcomm Snapdragon devices by triggering a buffer over-read during wireless frame processing. This can disrupt normal device operation temporarily. The vulnerability impacts confidentiality, integrity, and availability as per the CVSS vector, but no further exploitation details or persistent impacts are documented. No known active exploits have been reported.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, monitor vendor communications for updates. No specific mitigations or workarounds are documented at this time.

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Technical Details

Data Version
5.2
Assigner Short Name
qualcomm
Date Reserved
2025-12-17T04:35:45.741Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
null

Threat ID: 69d3dfaa0a160ebd92c70252

Added to database: 4/6/2026, 4:30:34 PM

Last enriched: 4/6/2026, 4:46:35 PM

Last updated: 4/7/2026, 7:08:20 AM

Views: 7

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