What is CVE-2020-11172?

CVE-2020-11172 is a critical-severity vulnerability in Qualcomm Ipq4019, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2020-11-02.

How severe is CVE-2020-11172?

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

Buffer overflow in Qualcomm Ipq4019

CVE-2020-11172

u'fscanf reads a string from a file and stores its contents on a statically allocated stack memory which leads to stack overflow' in Snapdragon Wired Infrastructure and Networking in IPQ4019, IPQ6018, IPQ8064, IPQ8074, QCA9531, QCA9980

Vulnerability class: Buffer Overflow

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 (53.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.1% 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)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

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-2020-11172?: CVE-2020-11172 is a critical-severity vulnerability in Qualcomm Ipq4019, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2020-11-02.
How severe is CVE-2020-11172?: Critical severity. CVSS v3 base score is 9.8 out of 10.