CVE-2023-21669

Memory disclosure via DPP action-frame buffer over-read

Published Jun 6, 2023 · Updated Aug 2, 2024

Buffer over-read in Qualcomm WLAN HOST firmware allows adjacent unauthenticated attackers to disclose memory via a crafted DPP action frame. When the host sends a DPP action frame to a peer with an invalid source address, the frame-processing path reads beyond its intended buffer. Exploitation requires wireless proximity and affects confidentiality only, with no reported integrity or availability impact.

CVSS severity7.5
High
EPSS probability0.35%
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

Buffer over-read in Qualcomm WLAN HOST firmware allows adjacent unauthenticated attackers to disclose memory via a crafted DPP action frame. When the host sends a DPP action frame to a peer with an invalid source address, the frame-processing path reads beyond its intended buffer. Exploitation requires wireless proximity and affects confidentiality only, with no reported integrity or availability impact.

The record

CVE
CVE-2023-21669
Published
Jun 6, 2023
Updated
Aug 2, 2024
Vendor
Qualcomm
Product
QCN9074 Firmware
Classifications
CWE-125, CWE-126
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 6, 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=0 <=*

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Qualcomm · QCN9074 Firmwareversion=0 <=*
Qualcomm · Qualcomm WCN3660B Firmwareversion=0 <=*
Qualcomm · Qualcomm QRB5165N Firmwareversion=0 <=*
Qualcomm · QCS8250 Firmwareversion=0 <=*
Qualcomm · Qualcomm QCA6431 Firmwareversion=0 <=*
Qualcomm · Flight RB5 5G Platform Firmwareversion=0 <=*
Qualcomm · Qualcomm WCD9375 Firmwareversion=0 <=*
Qualcomm · Snapdragon X50 5G Modem-RF System Firmwareversion=0 <=*
Qualcomm · WSA8810 Firmwareversion=0 <=*
Qualcomm · Qualcomm Snapdragon 429 Mobile Platform Firmwareversion=0 <=*
Qualcomm · Qualcomm QCA6426 Firmwareversion=0 <=*
Qualcomm · Snapdragonversion=AQT1000; version=FastConnect 6200; version=FastConnect 6800; version=FastConnect 6900; version=Flight RB5 5G Platform; version=QCA6391; version=QCA6420; version=QCA6421; version=QCA6426; version=QCA6430; version=QCA6431; version=QCA6436; version=QCM2290; version=QCM4290; version=QCN9074; version=QCS2290; version=QCS4290; version=QCS8250; version=QRB5165M; version=QRB5165N; version=Robotics RB5 Platform; version=SD660; version=SD730; version=SD855; version=SD865 5G; version=SDM429W; version=SDX55; version=SM6250; version=Snapdragon 429 Mobile Platform; version=Snapdragon 660 Mobile Platform; version=Snapdragon 675 Mobile Platform; version=Snapdragon 678 Mobile Platform (SM6150-AC); version=Snapdragon 720G Mobile Platform; version=Snapdragon 730G Mobile Platform (SM7150-AB); version=Snapdragon 730 Mobile Platform (SM7150-AA); version=Snapdragon 732G Mobile Platform (SM7150-AC); 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 X50 5G Modem-RF System; version=Snapdragon X55 5G Modem-RF System; version=Snapdragon XR2 5G Platform; version=SXR2130; version=WCD9335; version=WCD9341; version=WCD9370; version=WCD9375; version=WCD9380; version=WCD9385; version=WCN3620; version=WCN3660B; version=WCN3910; version=WCN3950; version=WCN3980; version=WCN3988; version=WCN3990; version=WSA8810; version=WSA8815
Qualcomm · Qualcomm Snapdragon 865 5G Mobile Platform Firmwareversion=0 <=*
Qualcomm · Qualcomm SM6250 Firmwareversion=0 <=*
Qualcomm · QCA6421 Firmwareversion=0 <=*
Qualcomm · Qualcomm SD855 Firmwareversion=0 <=*
Qualcomm · FastConnect 6900 Firmwareversion=0 <=*
Qualcomm · WCD9370 Firmwareversion=0 <=*
Qualcomm · Qualcomm QRB5165M Firmwareversion=0 <=*
Qualcomm · QCA6420 Firmwareversion=0 <=*
Qualcomm · Qualcomm Snapdragon 660 Mobile Platform Firmwareversion=0 <=*
Qualcomm · Qualcomm WCD9341 Firmwareversion=0 <=*
Qualcomm · Snapdragon X55 5G Modem-RF System Firmwareversion=0 <=*
Qualcomm · QCM4290 Firmwareversion=0 <=*
Qualcomm · WCN3988 Firmwareversion=0 <=*
Qualcomm · Qualcomm Snapdragon 855 Mobile Platform Firmwareversion=0 <=*
Qualcomm · Qualcomm QCA6436 Firmwareversion=0 <=*
Qualcomm · WCD9380 Firmwareversion=0 <=*
Qualcomm · QCM2290 Firmwareversion=0 <=*
Qualcomm · Qualcomm QCA6430 Firmwareversion=0 <=*
Qualcomm · Qualcomm SD730 Firmwareversion=0 <=*
Qualcomm · QCS4290 Firmwareversion=0 <=*
Qualcomm · Qualcomm WCN3990 Firmwareversion=0 <=*
Qualcomm · Qualcomm SD865 5G Firmwareversion=0 <=*
Qualcomm · Qualcomm WCN3620 Firmwareversion=0 <=*
Qualcomm · QCS2290 Firmwareversion=0 <=*
Qualcomm · FastConnect 6200 Firmwareversion=0 <=*
Qualcomm · Qualcomm Snapdragon 720G Mobile Platform Firmwareversion=0 <=*
Qualcomm · Qualcomm Snapdragon 675 Mobile Platform Firmwareversion=0 <=*
Qualcomm · AQT1000 Firmwareversion=0 <=*
Qualcomm · Qualcomm SDX55 Firmwareversion=0 <=*
Qualcomm · WCN3950 Firmwareversion=0 <=*
Qualcomm · QCA6391 Firmwareversion=0 <=*
Qualcomm · Qualcomm Snapdragon XR2 5G Platform Firmwareversion=0 <=*
Qualcomm · WCD9385 Firmwareversion=0 <=*
Qualcomm · WCN3980 Firmwareversion=0 <=*
Qualcomm · Qualcomm WCD9335 Firmwareversion=0 <=*
Qualcomm · FastConnect 6800 Firmwareversion=0 <=*
Qualcomm · Qualcomm SD660 Firmwareversion=0 <=*
Qualcomm · Qualcomm WCN3910 Firmwareversion=0 <=*
Qualcomm · SXR2130 Firmwareversion=0 <=*
Qualcomm · SDM429W Firmwareversion=0 <=*
Qualcomm · WSA8815 Firmwareversion=0 <=*
Qualcomm · Robotics RB5 Platform Firmwareversion=0 <=*

Published CVSS scores

7.5National Institute of Standards and TechnologyCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
CWE-126Buffer Over-read

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