What is CVE-2020-11227?

CVE-2020-11227 is a critical-severity vulnerability in Qualcomm Apq8009, classified under Improper Validation of Array Index. CVSS score: 9.8/10. Published 2021-03-17.

How severe is CVE-2020-11227?

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

Is CVE-2020-11227 known to be exploited?

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

Buffer overflow in Qualcomm Apq8009

CVE-2020-11227

Out of bound write while parsing RTT/TTY packet parsing due to lack of check of buffer size before copying into buffer in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon IoT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables

Published 2021-03-17 · 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: 0.009 (58.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

TinyNiko/android_

References

www.qualcomm.com/company/product-security/bulletins/march-2021-bulletin (Vendor Advisory)

Frequently asked questions

What is CVE-2020-11227?: CVE-2020-11227 is a critical-severity vulnerability in Qualcomm Apq8009, classified under Improper Validation of Array Index. CVSS score: 9.8/10. Published 2021-03-17.
How severe is CVE-2020-11227?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2020-11227 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.