CVE-2023-21649

Memory corruption via unchecked WLAN command copy

Published Aug 8, 2023 · Updated Aug 2, 2024

A classic buffer overflow in Qualcomm Snapdragon WLAN firmware allows local administrators to corrupt memory through a driver command. The doDriverCmd path copies an unspecified command without validating its size against the destination buffer. High-privileged local access is required, and Qualcomm has not disclosed the command format, destination buffer, or resulting post-corruption behavior.

CVSS severity6.7
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A classic buffer overflow in Qualcomm Snapdragon WLAN firmware allows local administrators to corrupt memory through a driver command. The doDriverCmd path copies an unspecified command without validating its size against the destination buffer. High-privileged local access is required, and Qualcomm has not disclosed the command format, destination buffer, or resulting post-corruption behavior.

The record

CVE
CVE-2023-21649
Published
Aug 8, 2023
Updated
Aug 2, 2024
Vendor
Qualcomm
Product
SA8155P Firmware
Classifications
CWE-787, CWE-120
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Aug 8, 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 vectorlocal
Required privilegesadmin

What is affected?

Qualcomm · SA8155P Firmwareversion=0 <=*
Qualcomm · Qualcomm SDX55M Firmwareversion=0 <=*
Qualcomm · QCN9074 Firmwareversion=0 <=*
Qualcomm · Qualcomm WCN3660B Firmwareversion=0 <=*
Qualcomm · SW5100 Firmwareversion=0 <=*
Qualcomm · SW5100P Firmwareversion=0 <=*
Qualcomm · Qualcomm APQ8096AU Firmwareversion=0 <=*
Qualcomm · Qualcomm QCA6431 Firmwareversion=0 <=*
Qualcomm · Qualcomm SDA429W Firmwareversion=0 <=*
Qualcomm · Qualcomm QCA6595AU Firmwareversion=0 <=*
Qualcomm · Qualcomm WCD9375 Firmwareversion=0 <=*
Qualcomm · QCS610 Firmwareversion=0 <=*
Qualcomm · WSA8810 Firmwareversion=0 <=*
Qualcomm · QCA8337 Firmwareversion=0 <=*
Qualcomm · Qualcomm QCA6426 Firmwareversion=0 <=*
Qualcomm · SA6150P Firmwareversion=0 <=*
Qualcomm · WCN3680B Firmwareversion=0 <=*
Qualcomm · Qualcomm QCA6595 Firmwareversion=0 <=*
Qualcomm · Qualcomm SM4375 Firmwareversion=0 <=*
Qualcomm · QCS410 Firmwareversion=0 <=*
Qualcomm · SA8195P Firmwareversion=0 <=*
Qualcomm · Snapdragonversion=APQ8096AU; version=AQT1000; version=MDM9628; version=MDM9650; version=QCA6390; version=QCA6391; version=QCA6420; version=QCA6421; version=QCA6426; version=QCA6430; version=QCA6431; version=QCA6436; version=QCA6554A; version=QCA6564A; version=QCA6564AU; version=QCA6574; version=QCA6574A; version=QCA6574AU; version=QCA6584AU; version=QCA6595; version=QCA6595AU; version=QCA6696; version=QCA8337; version=QCC5100; version=QCN9074; version=QCS410; version=QCS610; version=SA6145P; version=SA6150P; version=SA6155P; version=SA8145P; version=SA8150P; version=SA8155P; version=SA8195P; version=SD480; version=SD695; version=SD855; version=SD865 5G; version=SD870; version=SDA429W; version=SDX55; version=SDX55M; version=SDXR2 5G; version=SM4375; version=SW5100; version=SW5100P; version=WCD9341; version=WCD9370; version=WCD9375; version=WCD9380; version=WCD9385; version=WCN3610; version=WCN3660B; version=WCN3680B; version=WCN3950; version=WCN3980; version=WCN3988; version=WCN3991; version=WCN3998; version=WCN6850; version=WCN6851; version=WSA8810; version=WSA8815; version=WSA8830; version=WSA8835
Qualcomm · SA6155P Firmwareversion=0 <=*
Qualcomm · QCA6421 Firmwareversion=0 <=*
Qualcomm · Qualcomm SD855 Firmwareversion=0 <=*
Qualcomm · SA8145P Firmwareversion=0 <=*
Qualcomm · Qualcomm QCA6564A Firmwareversion=0 <=*
Qualcomm · QCA6554A Firmwareversion=0 <=*
Qualcomm · WCD9370 Firmwareversion=0 <=*
Qualcomm · Qualcomm SDXR2 5G Firmwareversion=0 <=*
Qualcomm · SA8150P Firmwareversion=0 <=*
Qualcomm · QCA6420 Firmwareversion=0 <=*
Qualcomm · Qualcomm WCD9341 Firmwareversion=0 <=*
Qualcomm · Qualcomm QCA6564AU Firmwareversion=0 <=*
Qualcomm · WCN3988 Firmwareversion=0 <=*
Qualcomm · Qualcomm SD695 Firmwareversion=0 <=*
Qualcomm · Qualcomm QCA6436 Firmwareversion=0 <=*
Qualcomm · QCA6574AU Firmwareversion=0 <=*
Qualcomm · QCA6584AU Firmwareversion=0 <=*
Qualcomm · Qualcomm QCA6390 Firmwareversion=0 <=*
Qualcomm · WCD9380 Firmwareversion=0 <=*
Qualcomm · Qualcomm QCA6574A Firmwareversion=0 <=*
Qualcomm · Qualcomm WCN3991 Firmwareversion=0 <=*
Qualcomm · Qualcomm QCA6574 Firmwareversion=0 <=*
Qualcomm · Qualcomm QCA6430 Firmwareversion=0 <=*
Qualcomm · SA6145P Firmwareversion=0 <=*
Qualcomm · Qualcomm SD870 Firmwareversion=0 <=*
Qualcomm · Qualcomm SD865 5G Firmwareversion=0 <=*
Qualcomm · Qualcomm WCN3610 Firmwareversion=0 <=*
Qualcomm · MDM9628 Firmwareversion=0 <=*
Qualcomm · AQT1000 Firmwareversion=0 <=*
Qualcomm · Qualcomm SDX55 Firmwareversion=0 <=*
Qualcomm · QCC5100 Firmwareversion=0 <=*
Qualcomm · Qualcomm WCN6851 Firmwareversion=0 <=*
Qualcomm · WCN3950 Firmwareversion=0 <=*
Qualcomm · WSA8830 Firmwareversion=0 <=*
Qualcomm · QCA6391 Firmwareversion=0 <=*
Qualcomm · WCD9385 Firmwareversion=0 <=*
Qualcomm · WCN3980 Firmwareversion=0 <=*
Qualcomm · Qualcomm WCN6850 Firmwareversion=0 <=*
Qualcomm · WSA8835 Firmwareversion=0 <=*
Qualcomm · Qualcomm WCN3998 Firmwareversion=0 <=*
Qualcomm · SD480 Firmwareversion=0 <=*
Qualcomm · QCA6696 Firmwareversion=0 <=*
Qualcomm · MDM9650 Firmwareversion=0 <=*
Qualcomm · WSA8815 Firmwareversion=0 <=*

Published CVSS scores

6.7QualcommCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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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