Skip to main content
EPSS 0.1%top 100%

CVE-2026-21366: CWE-190 Integer Overflow or Wraparound in Qualcomm, Inc. Snapdragon

0
High
VulnerabilityCVE-2026-21366cvecve-2026-21366cwe-190
Published: 08/04/2026 (08/04/2026, 15:07:12 UTC)
Source: CVE Database V5
Vendor/Project: Qualcomm, Inc.
Product: 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

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected software

Qualcomm, Inc.

Snapdragon

Affected versions
=QCA6595=QCA6696

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/11/2026, 18:01:16 UTC

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.

Pro Console: star threats, build custom feeds, automate alerts via Slack, email & webhooks.Upgrade to Pro

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

Community Reviews

0 reviews

Crowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.

Sort by
Loading community insights…

Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.

Actions

PRO

Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.

Please log in to the Console to use AI analysis features.

Need more coverage?

Upgrade to Pro Console for AI refresh and higher limits.

For incident response and remediation, OffSeq services can help resolve threats faster.

Latest Threats

Breach by OffSeqOFFSEQFRIENDS — 25% OFF

Check if your credentials are on the dark web

Instant breach scanning across billions of leaked records. Free tier available.

Scan now
OffSeq TrainingCredly Certified

Lead Pen Test Professional

Technical5-day eLearningPECB Accredited
View courses