CVE-2026-57546Network attack vector

Wireless service disruption via zero-sized configuration override

Published Oct 6, 2026 · Updated Oct 6, 2026

A buffer over-read in Qualcomm Snapdragon WLAN HAL allows remote attackers to disrupt wireless service via a continuous-receive command. The HAL processes the command with a zero-sized global configuration override; Qualcomm has not disclosed the exact read operation or how network input reaches the command. The published assessment requires no credentials or user interaction and documents a transient interruption, not data access or modification.

CVSS severity7.5
High
EPSS probability0.17%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A buffer over-read in Qualcomm Snapdragon WLAN HAL allows remote attackers to disrupt wireless service via a continuous-receive command. The HAL processes the command with a zero-sized global configuration override; Qualcomm has not disclosed the exact read operation or how network input reaches the command. The published assessment requires no credentials or user interaction and documents a transient interruption, not data access or modification.

The record

CVE
CVE-2026-57546
Published
Oct 6, 2026
Updated
Oct 6, 2026
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-126, T1464
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Congo
  2. Affected versionversion=Qualcomm FastConnect 8800 Mobile Connectivity System

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Qualcomm · Snapdragonversion=Congo; version=Qualcomm FastConnect 8800 Mobile Connectivity System

Published CVSS scores

7.5Qualcomm CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-126Buffer Over-read
T1464Network Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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