HOMEVULNERABILITIESCVE-2020-3667
CRITICAL

CVE-2020-3667

CWE-120Published: September 8, 2020· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

u'Buffer Overflow in mic calculation for WPA due to copying data into buffer without validating the length of buffer' in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wired Infrastructure and Networking in APQ8098, IPQ5018, IPQ6018, IPQ8074, Kamorta, MSM8998, Nicobar, QCA6390, QCA8081, QCS404, QCS405, QCS605, Rennell, SA415M, Saipan, SC7180, SC8180X, SDA845, SDM630, SDM636, SDM660, SDM670, SDM710, SDM845, SDM850, SM6150, SM7150, SM8150, SM8250, SXR1130

NVD Source

Technical Analysis

CVE-2020-3667 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Qualcomm60 product(s)
apq8098 firmwareapq8098ipq5018 firmwareipq5018ipq6018 firmwareipq6018ipq8074 firmwareipq8074kamorta firmwarekamortamsm8998 firmwaremsm8998+48
Source: NVD CPE · 60 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
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Official Patches & Advisories

All References (2)

Quick Facts

CVE IDCVE-2020-3667
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-120
CISA KEVNo
Affected1 vendor(s)
PublishedSep 8, 2020

Related CVEs (CWE-120)

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2020-3667 in threat intel feeds
  • Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.