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Vulnerability record · CVE-2020-3656 · published 9 September 2020

CVE-2020-3656: Qualcomm apq8009 firmware classic buffer overflow vulnerability

Qualcomm · Apq8009 Firmware

Out of bound access can happen in MHI command process due to lack of check of command channel id value received from MHI devices in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables in APQ8009, Kamorta, MDM9607, MSM8917, MSM8953, Nicobar, QCM2150, QCS405, QCS605, QM215, Rennell, SA6155P, SA8155P, Saipan, SC8180X, SDM429, SDM429W, SDM439, SDM450, SDM632, SDM710, SDM845, SDX55, SM6150, SM7150, SM8150, SM8250, SXR2130

7.8 CVSS 3.1 High EPSS 0.23% · top 87.7% CWE-120 · Classic buffer overflow
7.8CVSS 3.1 base score, v2 7.2
0.23%EPSS exploitation probability, 30 days
NoNot in CISA KEV
28Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Out of bound access can happen in MHI command process due to lack of check of command channel id value received from MHI devices in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables in APQ8009, Kamorta, MDM9607, MSM8917, MSM8953, Nicobar, QCM2150, QCS405, QCS605, QM215, Rennell, SA6155P, SA8155P, Saipan, SC8180X, SDM429, SDM429W, SDM439, SDM450, SDM632, SDM710, SDM845, SDX55, SM6150, SM7150, SM8150, SM8250, SXR2130

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

28 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.qualcomm.com/company/product-security/bulletins/september-2020-bulletin PatchVendor Advisory
https://www.qualcomm.com/company/product-security/bulletins/september-2020-bulletin PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.8CVE-2022-22071Qualcomm chipset shell memory use-after-free via IOCTL munmapA use-after-free exists in Qualcomm Snapdragon and related chipset firmware when process shell memory is freed through an IOCTL munmap call while pro…KEVEPSS 0.41%analysed7.8CVE-2020-11261Qualcomm Snapdragon chipsets memory corruption via improper allocation size checkQualcomm Snapdragon firmware fails to return an error when a user application requests a very large memory allocation, leading to memory corruption (…KEVEPSS 1.6%analysed7.8CVE-2021-1905Qualcomm Snapdragon chipsets use-after-free in memory mapping handlingA use-after-free flaw exists in multiple Qualcomm Snapdragon chipset families due to improper handling of memory mapping when multiple processes oper…KEVEPSS 1.5%analysed5.5CVE-2021-1906Qualcomm Snapdragon GPU address deregistration failure causes allocation denialImproper handling of address deregistration on failure in Qualcomm Snapdragon chipsets can cause subsequent GPU address allocation to fail. The flaw …KEVEPSS 0.52%analysed9.8CVE-2022-40510Qualcomm apq8009 firmware out-of-bounds write vulnerabilityMemory corruption due to buffer copy without checking size of input in Audio while voice call with EVS vocoder.EPSS 0.43%9.8CVE-2022-40515Qualcomm apq8009 firmware double free vulnerabilityMemory corruption in Video due to double free while playing 3gp clip with invalid metadata atoms.EPSS 0.33%9.8CVE-2022-40537Qualcomm apq8009 firmware vulnerabilityMemory corruption in Bluetooth HOST while processing the AVRC_PDU_GET_PLAYER_APP_VALUE_TEXT AVRCP response.EPSS 0.36%9.8CVE-2022-25727Qualcomm ar8031 firmware vulnerabilityMemory Corruption in modem due to improper length check while copying into memory in Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon V…EPSS 0.45%

Source: NIST National Vulnerability Database (record CVE-2020-3656), CISA KEV, FIRST EPSS (scores of 2026-10-07). This page is refreshed as NVD updates the record.