CVE-2020-3665

Memory corruption via unchecked firmware group index

Published Jun 22, 2020 · Updated Aug 4, 2024

Buffer overflow in the WLAN host component of Qualcomm Snapdragon chipsets allows local users to corrupt memory via a firmware command. The WLAN host uses a firmware-supplied group_id as an array index without validating that the value is in range. Reaching the flaw requires local low-privileged access and a crafted firmware command; published sources do not identify a specific execution outcome.

CVSS severity7.8
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in the WLAN host component of Qualcomm Snapdragon chipsets allows local users to corrupt memory via a firmware command. The WLAN host uses a firmware-supplied group_id as an array index without validating that the value is in range. Reaching the flaw requires local low-privileged access and a crafted firmware command; published sources do not identify a specific execution outcome.

The record

CVE
CVE-2020-3665
Published
Jun 22, 2020
Updated
Aug 4, 2024
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-129
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 22, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=APQ8009, APQ8053, APQ8096AU, MDM9206, MDM9207C, MDM9607, MDM9615, MDM9640, MDM9650, MSM8909W, MSM8996, MSM8996AU, QCA6174A, QCA9377, QCA9379, SDM439, SDM636, SDM660, SDX20, SDX24, SM8150

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Qualcomm · Snapdragonversion=APQ8009, APQ8053, APQ8096AU, MDM9206, MDM9207C, MDM9607, MDM9615, MDM9640, MDM9650, MSM8909W, MSM8996, MSM8996AU, QCA6174A, QCA9377, QCA9379, SDM439, SDM636, SDM660, SDX20, SDX24, SM8150

Published CVSS scores

4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
7.8NIST NVDCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-129Improper Validation of Array Index

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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