CVE-2022-40508Network attack vector

Transient modem outage via unsupported scheduling configuration

Published May 2, 2023 · Updated Aug 3, 2024

Reachable assertion in Qualcomm Snapdragon modem firmware allows remote attackers to cause a transient service interruption. The modem asserts while processing configuration for unsupported cross-carrier scheduling instead of rejecting that configuration safely. Network reachability to the modem configuration path is required; the documented consequence is a temporary availability-only modem outage.

CVSS severity7.5
High
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reachable assertion in Qualcomm Snapdragon modem firmware allows remote attackers to cause a transient service interruption. The modem asserts while processing configuration for unsupported cross-carrier scheduling instead of rejecting that configuration safely. Network reachability to the modem configuration path is required; the documented consequence is a temporary availability-only modem outage.

The record

CVE
CVE-2022-40508
Published
May 2, 2023
Updated
Aug 3, 2024
Vendor
Qualcomm
Product
Qualcomm Snapdragon 750G 5G Mobile Platform Firmware
Classifications
CWE-617, T1498
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 2, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=0 <=*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Qualcomm · Qualcomm Snapdragon 750G 5G Mobile Platform Firmwareversion=0 <=*
Qualcomm · Qualcomm SM7315 Firmwareversion=0 <=*
Qualcomm · QCA6698AQ Firmwareversion=0 <=*
Qualcomm · Qualcomm QCA6431 Firmwareversion=0 <=*
Qualcomm · Qualcomm QCA6595AU Firmwareversion=0 <=*
Qualcomm · Qualcomm Snapdragon 4 Gen 1 Mobile Platform Firmwareversion=0 <=*
Qualcomm · Qualcomm WCD9375 Firmwareversion=0 <=*
Qualcomm · Snapdragon Auto 5G Modem-RF Firmwareversion=0 <=*
Qualcomm · Snapdragon X50 5G Modem-RF System Firmwareversion=0 <=*
Qualcomm · WSA8810 Firmwareversion=0 <=*
Qualcomm · QCA8337 Firmwareversion=0 <=*
Qualcomm · Qualcomm QCA6426 Firmwareversion=0 <=*
Qualcomm · QCA8081 Firmwareversion=0 <=*
Qualcomm · FastConnect 7800 Firmwareversion=0 <=*
Qualcomm · WCD9360 Firmwareversion=0 <=*
Qualcomm · Qualcomm SD888 Firmwareversion=0 <=*
Qualcomm · Snapdragon X65 5G Modem-RF System Firmwareversion=0 <=*
Qualcomm · Snapdragonversion=315 5G IoT Modem; version=AQT1000; version=AR8035; version=FastConnect 6200; version=FastConnect 6700; version=FastConnect 6800; version=FastConnect 6900; version=FastConnect 7800; version=QCA6391; version=QCA6421; version=QCA6426; version=QCA6431; version=QCA6436; version=QCA6574A; version=QCA6574AU; version=QCA6595AU; version=QCA6696; version=QCA6698AQ; version=QCA8081; version=QCA8337; version=QCN6024; version=QCN9024; version=SD855; version=SD865 5G; version=SD888; version=SDX55; version=SDX57M; version=SM7250P; version=SM7315; version=Snapdragon 480 5G Mobile Platform; version=Snapdragon 480+ 5G Mobile Platform (SM4350-AC); version=Snapdragon 4 Gen 1 Mobile Platform; version=Snapdragon 690 5G Mobile Platform; version=Snapdragon 695 5G Mobile Platform; version=Snapdragon 750G 5G Mobile Platform; version=Snapdragon 765 5G Mobile Platform (SM7250-AA); version=Snapdragon 765G 5G Mobile Platform (SM7250-AB); version=Snapdragon 768G 5G Mobile Platform (SM7250-AC); version=Snapdragon 780G 5G Mobile Platform; version=Snapdragon 7c+ Gen 3 Compute; version=Snapdragon 855+/860 Mobile Platform (SM8150-AC); version=Snapdragon 855 Mobile Platform; version=Snapdragon 865 5G Mobile Platform; version=Snapdragon 865+ 5G Mobile Platform (SM8250-AB); version=Snapdragon 870 5G Mobile Platform (SM8250-AC); version=Snapdragon 8 Gen 1 Mobile Platform; version=Snapdragon 8+ Gen 1 Mobile Platform; version=Snapdragon Auto 5G Modem-RF; version=Snapdragon X50 5G Modem-RF System; version=Snapdragon X55 5G Modem-RF System; version=Snapdragon X65 5G Modem-RF System; version=Snapdragon X70 Modem-RF System; version=Snapdragon XR2 5G Platform; version=SXR2130; version=WCD9341; version=WCD9360; version=WCD9370; version=WCD9375; version=WCD9380; version=WCD9385; version=WCN3988; version=WCN6740; version=WSA8810; version=WSA8815; version=WSA8830; version=WSA8835
Qualcomm · Qualcomm Snapdragon 865 5G Mobile Platform Firmwareversion=0 <=*
Qualcomm · Qualcomm Snapdragon 8 Gen 1 Mobile Platform Firmwareversion=0 <=*
Qualcomm · Qualcomm Snapdragon 695 5G Mobile Platform Firmwareversion=0 <=*
Qualcomm · QCA6421 Firmwareversion=0 <=*
Qualcomm · Qualcomm SD855 Firmwareversion=0 <=*
Qualcomm · Snapdragon X70 Modem-RF System Firmwareversion=0 <=*
Qualcomm · FastConnect 6700 Firmwareversion=0 <=*
Qualcomm · FastConnect 6900 Firmwareversion=0 <=*
Qualcomm · Qualcomm Snapdragon 480 5G Mobile Platform Firmwareversion=0 <=*
Qualcomm · WCD9370 Firmwareversion=0 <=*
Qualcomm · Qualcomm SM7250P Firmwareversion=0 <=*
Qualcomm · Qualcomm WCD9341 Firmwareversion=0 <=*
Qualcomm · Snapdragon X55 5G Modem-RF System Firmwareversion=0 <=*
Qualcomm · WCN3988 Firmwareversion=0 <=*
Qualcomm · Qualcomm Snapdragon 855 Mobile Platform Firmwareversion=0 <=*
Qualcomm · Qualcomm QCA6436 Firmwareversion=0 <=*
Qualcomm · QCA6574AU Firmwareversion=0 <=*
Qualcomm · WCD9380 Firmwareversion=0 <=*
Qualcomm · Qualcomm WCN6740 Firmwareversion=0 <=*
Qualcomm · Qualcomm QCA6574A Firmwareversion=0 <=*
Qualcomm · QCN6024 Firmwareversion=0 <=*
Qualcomm · Qualcomm Snapdragon 780G 5G Mobile Platform Firmwareversion=0 <=*
Qualcomm · Qualcomm SDX57M Firmwareversion=0 <=*
Qualcomm · Qualcomm SD865 5G Firmwareversion=0 <=*
Qualcomm · FastConnect 6200 Firmwareversion=0 <=*
Qualcomm · AR8035 Firmwareversion=0 <=*
Qualcomm · 315 5G IoT Modem Firmwareversion=0 <=*
Qualcomm · QCN9024 Firmwareversion=0 <=*
Qualcomm · AQT1000 Firmwareversion=0 <=*
Qualcomm · Qualcomm Snapdragon 690 5G Mobile Platform Firmwareversion=0 <=*
Qualcomm · Qualcomm SDX55 Firmwareversion=0 <=*
Qualcomm · WSA8830 Firmwareversion=0 <=*
Qualcomm · QCA6391 Firmwareversion=0 <=*
Qualcomm · Qualcomm Snapdragon XR2 5G Platform Firmwareversion=0 <=*
Qualcomm · WCD9385 Firmwareversion=0 <=*
Qualcomm · WSA8835 Firmwareversion=0 <=*
Qualcomm · FastConnect 6800 Firmwareversion=0 <=*
Qualcomm · SXR2130 Firmwareversion=0 <=*
Qualcomm · QCA6696 Firmwareversion=0 <=*
Qualcomm · WSA8815 Firmwareversion=0 <=*

Published CVSS scores

7.5Qualcomm, Inc.CVSS: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-617Reachable Assertion
T1498Network 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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