What is CVE-2020-3703?

CVE-2020-3703 is a critical-severity vulnerability in Qualcomm Apq8053, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2020-11-02.

How severe is CVE-2020-3703?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2020-3703 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Out-of-bounds Read in Qualcomm Apq8053

CVE-2020-3703

u'Buffer over-read issue in Bluetooth peripheral firmware due to lack of check for invalid opcode and length of opcode received from central device(This CVE is equivalent to Link Layer Length Overfow issue (CVE-2019-16336,CVE-2019-17519) and Silent Length Overflow issue(CVE-2019-17518) mentioned in sweyntooth paper)' in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon IoT, Snapdragon Mobile, Snapdragon Voice & Music in APQ8053, APQ8076, AR9344, Bitra, Kamorta, MDM9206, MDM9207C, MDM9607, MSM8905, MSM8917, MSM8937, MSM8940, MSM8953, Nicobar, QCA6174A, QCA9377, QCM2150, QCM6125, QCS404, QCS405, QCS605, QCS610, QM215, Rennell, SC8180X, SDM429, SDM439, SDM450, SDM630, SDM632, SDM636, SDM660, SDM670, SDM710, SDM845, SDX20, SDX24, SM6150, SM7150, SM8150, SXR1130

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2020-11-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (51.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

www.qualcomm.com/company/product-security/bulletins/october-2020-bulletin (Broken Link)
www.qualcomm.com/company/product-security/bulletins/october-2020-security-bulle… (Vendor Advisory)

Frequently asked questions

What is CVE-2020-3703?: CVE-2020-3703 is a critical-severity vulnerability in Qualcomm Apq8053, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2020-11-02.
How severe is CVE-2020-3703?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2020-3703 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.