CVE-2022-25733Network attack vector

Modem service interruption via crafted DNS packets

Published Feb 9, 2023 · Updated Aug 3, 2024

Null pointer dereference in Qualcomm Snapdragon modem firmware allows remote attackers to interrupt modem service via crafted DNS packets. The closed-source DNS packet-processing path dereferences a null pointer; Qualcomm has not disclosed the responsible function or malformed field. Network access to the modem's DNS traffic path is sufficient, with no authentication or user interaction, and the bounded consequence is modem service interruption.

CVSS severity7.5
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Null pointer dereference in Qualcomm Snapdragon modem firmware allows remote attackers to interrupt modem service via crafted DNS packets. The closed-source DNS packet-processing path dereferences a null pointer; Qualcomm has not disclosed the responsible function or malformed field. Network access to the modem's DNS traffic path is sufficient, with no authentication or user interaction, and the bounded consequence is modem service interruption.

The record

CVE
CVE-2022-25733
Published
Feb 9, 2023
Updated
Aug 3, 2024
Vendor
Qualcomm
Product
CSRA6620 Firmware
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 9, 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 · CSRA6620 Firmwareversion=0 <=*
Qualcomm · WSA8810 Firmwareversion=0 <=*
Qualcomm · Qualcomm WCD9306 Firmwareversion=0 <=*
Qualcomm · Qualcomm WCN3999 Firmwareversion=0 <=*
Qualcomm · Qualcomm WCN7850 Firmwareversion=0 <=*
Qualcomm · Qualcomm WCN6855 Firmwareversion=0 <=*
Qualcomm · CSRA6640 Firmwareversion=0 <=*
Qualcomm · Snapdragonversion=AR8031; version=CSRA6620; version=CSRA6640; version=MDM8207; version=MDM9205; version=MDM9206; version=MDM9207; version=MDM9607; version=QCA4004; version=QCA4010; version=QCA4020; version=QCA4024; version=QCS405; version=QTS110; version=SSG2115P; version=SSG2125P; version=SXR1230P; version=SXR2230P; version=WCD9306; version=WCD9330; version=WCD9335; version=WCD9380; version=WCD9385; version=WCN3980; version=WCN3998; version=WCN3999; version=WCN6855; version=WCN6856; version=WCN7850; version=WCN7851; version=WSA8810; version=WSA8815; version=WSA8830; version=WSA8832; version=WSA8835
Qualcomm · Qualcomm WCN6856 Firmwareversion=0 <=*
Qualcomm · SXR1230P Firmwareversion=0 <=*
Qualcomm · SSG2125P Firmwareversion=0 <=*
Qualcomm · SSG2115P Firmwareversion=0 <=*
Qualcomm · QCA4010 Firmwareversion=0 <=*
Qualcomm · AR8031 Firmwareversion=0 <=*
Qualcomm · Qualcomm WCN7851 Firmwareversion=0 <=*
Qualcomm · Qualcomm MDM9607 Firmwareversion=0 <=*
Qualcomm · QCA4020 Firmwareversion=0 <=*
Qualcomm · WCD9380 Firmwareversion=0 <=*
Qualcomm · QCA4004 Firmwareversion=0 <=*
Qualcomm · MDM8207 Firmwareversion=0 <=*
Qualcomm · MDM9207 Firmwareversion=0 <=*
Qualcomm · SXR2230P Firmwareversion=0 <=*
Qualcomm · QCA4024 Firmwareversion=0 <=*
Qualcomm · Qualcomm QTS110 Firmwareversion=0 <=*
Qualcomm · WSA8830 Firmwareversion=0 <=*
Qualcomm · Qualcomm QCS405 Firmwareversion=0 <=*
Qualcomm · WCD9385 Firmwareversion=0 <=*
Qualcomm · WCN3980 Firmwareversion=0 <=*
Qualcomm · WSA8835 Firmwareversion=0 <=*
Qualcomm · Qualcomm WCN3998 Firmwareversion=0 <=*
Qualcomm · Qualcomm WCD9335 Firmwareversion=0 <=*
Qualcomm · Qualcomm MDM9206 Firmwareversion=0 <=*
Qualcomm · WSA8832 Firmwareversion=0 <=*
Qualcomm · WCD9330 Firmwareversion=0 <=*
Qualcomm · MDM9205 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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Endpoint Denial of Service: Application 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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo