CVE-2020-3634

u'Multiple Read overflows issue due to improper length check while decoding Generic NAS transport/EMM info' in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables in APQ8053, APQ8096AU, APQ8098, Kamorta, MDM9150, MDM9205, MDM9206, MDM9607, MDM9625, MDM9635M, MDM9640, MDM9645, MDM9650, MDM9655, MSM8905, MSM8909W, MSM8917, MSM8953, MSM8996AU, MSM8998, Nicobar, QCM2150, QCS605, QCS610, QM215, Rennell, SA415M, Saipan, SC7180, SDA660, SDA845, SDM429, SDM429W, SDM439, SDM450, SDM630, SDM632, SDM636, SDM660, SDM670, SDM710, SDM845, SDM850, SDX20, SDX24, SDX55, SM6150, SM7150, SM8150, SXR1130

Published: 2020-09-09 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-3634 is rated Moderate Risk (58.2/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.06%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-3634

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.24% 1.06% +0.82%
2 2026-04-19 0.30% 0.24% -0.07%
3 2025-11-21 — 0.30% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-3634

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.2 [email protected]
9.4 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 9.2 [email protected]

Weakness enumeration for CVE-2020-3634

Affected software / configurations for CVE-2020-3634

Vendor Product Version Raw CPE
qualcomm apq8053_firmware — cpe:2.3:o:qualcomm:apq8053_firmware:-:*:*:*:*:*:*:*
qualcomm apq8096au_firmware — cpe:2.3:o:qualcomm:apq8096au_firmware:-:*:*:*:*:*:*:*
qualcomm apq8098_firmware — cpe:2.3:o:qualcomm:apq8098_firmware:-:*:*:*:*:*:*:*
qualcomm kamorta_firmware — cpe:2.3:o:qualcomm:kamorta_firmware:-:*:*:*:*:*:*:*
qualcomm mdm9150_firmware — cpe:2.3:o:qualcomm:mdm9150_firmware:-:*:*:*:*:*:*:*
qualcomm mdm9205_firmware — cpe:2.3:o:qualcomm:mdm9205_firmware:-:*:*:*:*:*:*:*
qualcomm mdm9206_firmware — cpe:2.3:o:qualcomm:mdm9206_firmware:-:*:*:*:*:*:*:*
qualcomm mdm9607_firmware — cpe:2.3:o:qualcomm:mdm9607_firmware:-:*:*:*:*:*:*:*
qualcomm mdm9625_firmware — cpe:2.3:o:qualcomm:mdm9625_firmware:-:*:*:*:*:*:*:*
qualcomm mdm9635m_firmware — cpe:2.3:o:qualcomm:mdm9635m_firmware:-:*:*:*:*:*:*:*
qualcomm mdm9640_firmware — cpe:2.3:o:qualcomm:mdm9640_firmware:-:*:*:*:*:*:*:*
qualcomm mdm9645_firmware — cpe:2.3:o:qualcomm:mdm9645_firmware:-:*:*:*:*:*:*:*
qualcomm mdm9650_firmware — cpe:2.3:o:qualcomm:mdm9650_firmware:-:*:*:*:*:*:*:*
qualcomm mdm9655_firmware — cpe:2.3:o:qualcomm:mdm9655_firmware:-:*:*:*:*:*:*:*
qualcomm msm8905_firmware — cpe:2.3:o:qualcomm:msm8905_firmware:-:*:*:*:*:*:*:*
qualcomm msm8909w_firmware — cpe:2.3:o:qualcomm:msm8909w_firmware:-:*:*:*:*:*:*:*
qualcomm msm8917_firmware — cpe:2.3:o:qualcomm:msm8917_firmware:-:*:*:*:*:*:*:*
qualcomm msm8953_firmware — cpe:2.3:o:qualcomm:msm8953_firmware:-:*:*:*:*:*:*:*
qualcomm msm8996au_firmware — cpe:2.3:o:qualcomm:msm8996au_firmware:-:*:*:*:*:*:*:*
qualcomm msm8998_firmware — cpe:2.3:o:qualcomm:msm8998_firmware:-:*:*:*:*:*:*:*
qualcomm nicobar_firmware — cpe:2.3:o:qualcomm:nicobar_firmware:-:*:*:*:*:*:*:*
qualcomm qcm2150_firmware — cpe:2.3:o:qualcomm:qcm2150_firmware:-:*:*:*:*:*:*:*
qualcomm qcs605_firmware — cpe:2.3:o:qualcomm:qcs605_firmware:-:*:*:*:*:*:*:*
qualcomm qcs610_firmware — cpe:2.3:o:qualcomm:qcs610_firmware:-:*:*:*:*:*:*:*
qualcomm qm215_firmware — cpe:2.3:o:qualcomm:qm215_firmware:-:*:*:*:*:*:*:*
qualcomm rennell_firmware — cpe:2.3:o:qualcomm:rennell_firmware:-:*:*:*:*:*:*:*
qualcomm sa415m_firmware — cpe:2.3:o:qualcomm:sa415m_firmware:-:*:*:*:*:*:*:*
qualcomm saipan_firmware — cpe:2.3:o:qualcomm:saipan_firmware:-:*:*:*:*:*:*:*
qualcomm sc7180_firmware — cpe:2.3:o:qualcomm:sc7180_firmware:-:*:*:*:*:*:*:*
qualcomm sda660_firmware — cpe:2.3:o:qualcomm:sda660_firmware:-:*:*:*:*:*:*:*
qualcomm sda845_firmware — cpe:2.3:o:qualcomm:sda845_firmware:-:*:*:*:*:*:*:*
qualcomm sdm429_firmware — cpe:2.3:o:qualcomm:sdm429_firmware:-:*:*:*:*:*:*:*
qualcomm sdm429w_firmware — cpe:2.3:o:qualcomm:sdm429w_firmware:-:*:*:*:*:*:*:*
qualcomm sdm439_firmware — cpe:2.3:o:qualcomm:sdm439_firmware:-:*:*:*:*:*:*:*
qualcomm sdm450_firmware — cpe:2.3:o:qualcomm:sdm450_firmware:-:*:*:*:*:*:*:*
qualcomm sdm630_firmware — cpe:2.3:o:qualcomm:sdm630_firmware:-:*:*:*:*:*:*:*
qualcomm sdm632_firmware — cpe:2.3:o:qualcomm:sdm632_firmware:-:*:*:*:*:*:*:*
qualcomm sdm636_firmware — cpe:2.3:o:qualcomm:sdm636_firmware:-:*:*:*:*:*:*:*
qualcomm sdm660_firmware — cpe:2.3:o:qualcomm:sdm660_firmware:-:*:*:*:*:*:*:*
qualcomm sdm670_firmware — cpe:2.3:o:qualcomm:sdm670_firmware:-:*:*:*:*:*:*:*
qualcomm sdm710_firmware — cpe:2.3:o:qualcomm:sdm710_firmware:-:*:*:*:*:*:*:*
qualcomm sdm845_firmware — cpe:2.3:o:qualcomm:sdm845_firmware:-:*:*:*:*:*:*:*
qualcomm sdm850_firmware — cpe:2.3:o:qualcomm:sdm850_firmware:-:*:*:*:*:*:*:*
qualcomm sdx20_firmware — cpe:2.3:o:qualcomm:sdx20_firmware:-:*:*:*:*:*:*:*
qualcomm sdx24_firmware — cpe:2.3:o:qualcomm:sdx24_firmware:-:*:*:*:*:*:*:*
qualcomm sdx55_firmware — cpe:2.3:o:qualcomm:sdx55_firmware:-:*:*:*:*:*:*:*
qualcomm sm6150_firmware — cpe:2.3:o:qualcomm:sm6150_firmware:-:*:*:*:*:*:*:*
qualcomm sm7150_firmware — cpe:2.3:o:qualcomm:sm7150_firmware:-:*:*:*:*:*:*:*
qualcomm sm8150_firmware — cpe:2.3:o:qualcomm:sm8150_firmware:-:*:*:*:*:*:*:*
qualcomm sxr1130_firmware — cpe:2.3:o:qualcomm:sxr1130_firmware:-:*:*:*:*:*:*:*

References for CVE-2020-3634

cvelogic Threat Intelligence