What is CVE-2020-3647?

CVE-2020-3647 is a high-severity vulnerability in Qualcomm Mdm9607, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2020-09-08.

How severe is CVE-2020-3647?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2020-3647 known to be exploited?

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

Buffer overflow in Qualcomm Mdm9607

CVE-2020-3647

u'Potential buffer overflow when accessing npu debugfs node "off"/"log" with large buffer size' in Snapdragon Compute, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music in MDM9607, QCS405, SC8180X, SDX55, SM6150, SM7150, SM8150

Vulnerability class: Buffer Overflow

Published 2020-09-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (7.8th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

404notf0und/CVE-Flow

References

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

Frequently asked questions

What is CVE-2020-3647?: CVE-2020-3647 is a high-severity vulnerability in Qualcomm Mdm9607, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2020-09-08.
How severe is CVE-2020-3647?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2020-3647 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.