CVE-2023-33019Network attack vector

Transient service interruption via invalid CSA channel

Published Sep 5, 2023 · Updated Aug 2, 2024

Denial of service in Qualcomm WLAN Host allows remote attackers to interrupt wireless service by sending an invalid channel in a CSA element. The mobile-station host processes that invalid channel while handling a Channel Switch Announcement information element, producing a transient denial of service instead of rejecting the announcement. The attack requires WLAN radio reachability and affects availability only; Qualcomm has not published a more specific failure mode than the transient interruption.

CVSS severity7.5
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Qualcomm WLAN Host allows remote attackers to interrupt wireless service by sending an invalid channel in a CSA element. The mobile-station host processes that invalid channel while handling a Channel Switch Announcement information element, producing a transient denial of service instead of rejecting the announcement. The attack requires WLAN radio reachability and affects availability only; Qualcomm has not published a more specific failure mode than the transient interruption.

The record

CVE
CVE-2023-33019
Published
Sep 5, 2023
Updated
Aug 2, 2024
Vendor
Qualcomm
Product
Qualcomm Snapdragon 1200 Wearable Platform Firmware
Classifications
CWE-285, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 5, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Qualcomm · Qualcomm Snapdragon 1200 Wearable Platform Firmwareversion=*
Qualcomm · Snapdragon Wear 2500 Platform Firmwareversion=*
Qualcomm · Qualcomm WCN3660B Firmwareversion=*
Qualcomm · WCD9326 Firmwareversion=*
Qualcomm · Qualcomm SDX20M Firmwareversion=*
Qualcomm · Qualcomm QCA6595AU Firmwareversion=*
Qualcomm · Qualcomm Snapdragon 210 Processor Firmwareversion=*
Qualcomm · Qualcomm SD626 Firmwareversion=*
Qualcomm · Qualcomm Snapdragon 653 Mobile Platform Firmwareversion=*
Qualcomm · Qualcomm Snapdragon 820 Automotive Platform Firmwareversion=*
Qualcomm · Qualcomm MSM8909W Firmwareversion=*
Qualcomm · Snapdragon Auto 5G Modem-RF Firmwareversion=*
Qualcomm · CSRA6620 Firmwareversion=*
Qualcomm · WSA8810 Firmwareversion=*
Qualcomm · Qualcomm Snapdragon 429 Mobile Platform Firmwareversion=*
Qualcomm · Qualcomm WCN3680 Firmwareversion=*
Qualcomm · WCN3680B Firmwareversion=*
Qualcomm · Qualcomm QCA6595 Firmwareversion=*
Qualcomm · Qualcomm 215 Mobile Platform Firmwareversion=*
Qualcomm · MSM8108 Firmwareversion=*
Qualcomm · CSRA6640 Firmwareversion=*
Qualcomm · Snapdragonversion=9206 LTE Modem; version=APQ8017; version=APQ8052; version=APQ8056; version=APQ8076; version=AR8031; version=CSRA6620; version=CSRA6640; version=C-V2X 9150; version=FastConnect 6200; version=Home Hub 100 Platform; version=MDM9250; version=MDM9628; version=MDM9650; version=MSM8108; version=MSM8209; version=MSM8608; version=MSM8909W; version=MSM8996AU; version=QCA6174A; version=QCA6175A; version=QCA6554A; version=QCA6564A; version=QCA6564AU; version=QCA6574; version=QCA6574A; version=QCA6574AU; version=QCA6584; version=QCA6584AU; version=QCA6595; version=QCA6595AU; version=QCA6696; version=QCA9367; version=QCA9377; version=QCA9379; version=Qualcomm 205 Mobile Platform; version=Qualcomm 215 Mobile Platform; version=SD626; version=SDM429W; version=SDX20M; version=Smart Audio 200 Platform; version=Smart Audio 400 Platform; version=Smart Display 200 Platform (APQ5053-AA); version=Snapdragon 1200 Wearable Platform; version=Snapdragon 208 Processor; version=Snapdragon 210 Processor; version=Snapdragon 212 Mobile Platform; version=Snapdragon 425 Mobile Platform; version=Snapdragon 429 Mobile Platform; version=Snapdragon 439 Mobile Platform; version=Snapdragon 450 Mobile Platform; version=Snapdragon 617 Processor; version=Snapdragon 625 Mobile Platform; version=Snapdragon 626 Mobile Platform; version=Snapdragon 632 Mobile Platform; version=Snapdragon 650 Mobile Platform; version=Snapdragon 652 Mobile Platform; version=Snapdragon 653 Mobile Platform; version=Snapdragon 820 Automotive Platform; version=Snapdragon Auto 5G Modem-RF; version=Snapdragon Wear 2100 Platform; version=Snapdragon Wear 2500 Platform; version=Snapdragon Wear 3100 Platform; version=Snapdragon Wear 4100+ Platform; version=Snapdragon X12 LTE Modem; version=Snapdragon X20 LTE Modem; version=Snapdragon X5 LTE Modem; version=Vision Intelligence 100 Platform (APQ8053-AA); version=Vision Intelligence 200 Platform (APQ8053-AC); version=WCD9326; version=WCD9330; version=WCD9335; version=WCN3610; version=WCN3615; version=WCN3620; version=WCN3660; version=WCN3660B; version=WCN3680; version=WCN3680B; version=WCN3980; version=WSA8810; version=WSA8815
Qualcomm · MDM9206 LTE Modem Firmwareversion=*
Qualcomm · Qualcomm Snapdragon X12 LTE Modem Firmwareversion=*
Qualcomm · MSM8608 Firmwareversion=*
Qualcomm · MSM8209 Firmwareversion=*
Qualcomm · Qualcomm Snapdragon 625 Mobile Platform Firmwareversion=*
Qualcomm · Qualcomm QCA9367 Firmwareversion=*
Qualcomm · Qualcomm QCA6564A Firmwareversion=*
Qualcomm · QCA6554A Firmwareversion=*
Qualcomm · Qualcomm QCA9377 Firmwareversion=*
Qualcomm · Qualcomm Snapdragon 450 Mobile Platform Firmwareversion=*
Qualcomm · Snapdragon Wear 2100 Platform Firmwareversion=*
Qualcomm · Qualcomm Smart Audio 400 Platform Firmwareversion=*
Qualcomm · APQ8052 Firmwareversion=*
Qualcomm · Qualcomm Snapdragon 632 Mobile Platform Firmwareversion=*
Qualcomm · Qualcomm QCA6564AU Firmwareversion=*
Qualcomm · QCA6175A Firmwareversion=*
Qualcomm · C-V2X 9150 Firmwareversion=*
Qualcomm · AR8031 Firmwareversion=*
Qualcomm · QCA6574AU Firmwareversion=*
Qualcomm · Qualcomm WCN3615 Firmwareversion=*
Qualcomm · QCA6584AU Firmwareversion=*
Qualcomm · Qualcomm Snapdragon 439 Mobile Platform Firmwareversion=*
Qualcomm · APQ8076 Firmwareversion=*
Qualcomm · Qualcomm QCA6574A Firmwareversion=*
Qualcomm · Qualcomm Snapdragon X5 LTE Modem Firmwareversion=*
Qualcomm · Qualcomm QCA6574 Firmwareversion=*
Qualcomm · Qualcomm WCN3660 Firmwareversion=*
Qualcomm · APQ8017 Firmwareversion=*
Qualcomm · MSM8996AU Firmwareversion=*
Qualcomm · Qualcomm Snapdragon 650 Mobile Platform Firmwareversion=*
Qualcomm · APQ8056 Firmwareversion=*
Qualcomm · Qualcomm Snapdragon 208 Processor Firmwareversion=*
Qualcomm · Qualcomm WCN3610 Firmwareversion=*
Qualcomm · Qualcomm WCN3620 Firmwareversion=*
Qualcomm · Snapdragon Wear 3100 Platform Firmwareversion=*
Qualcomm · FastConnect 6200 Firmwareversion=*
Qualcomm · QCA6174A Firmwareversion=*
Qualcomm · Qualcomm Snapdragon 212 Mobile Platform Firmwareversion=*
Qualcomm · MDM9628 Firmwareversion=*
Qualcomm · Qualcomm 205 Mobile Platform Firmwareversion=*
Qualcomm · Qualcomm Snapdragon 626 Mobile Platform Firmwareversion=*
Qualcomm · Qualcomm QCA6584 Firmwareversion=*
Qualcomm · QCA9379 Firmwareversion=*
Qualcomm · Qualcomm Snapdragon 425 Mobile Platform Firmwareversion=*
Qualcomm · MDM9250 Firmwareversion=*
Qualcomm · WCN3980 Firmwareversion=*
Qualcomm · Qualcomm WCD9335 Firmwareversion=*
Qualcomm · Qualcomm Smart Audio 200 Platform Firmwareversion=*
Qualcomm · Qualcomm Snapdragon X20 LTE Modem Firmwareversion=*
Qualcomm · WCD9330 Firmwareversion=*
Qualcomm · QCA6696 Firmwareversion=*
Qualcomm · Qualcomm Snapdragon 617 Processor Firmwareversion=*
Qualcomm · SDM429W Firmwareversion=*
Qualcomm · MDM9650 Firmwareversion=*
Qualcomm · Home Hub 100 Platform Firmwareversion=*
Qualcomm · Qualcomm Snapdragon 652 Mobile Platform Firmwareversion=*
Qualcomm · WSA8815 Firmwareversion=*

Published CVSS scores

7.5QualcommCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5NIST NVDCVSS: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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-285Improper Authorization
T1499.004Application or System Exploitation

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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