What is CVE-2018-11891?

CVE-2018-11891 is a high-severity vulnerability in Google Android, classified under Improper Validation of Array Index. CVSS score: 8.8/10. Published 2018-09-19.

How severe is CVE-2018-11891?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Google Android

CVE-2018-11891

In all android releases (Android for MSM, Firefox OS for MSM, QRD Android) from CAF using the linux kernel, lack of check on the length of array while accessing can lead to an out of bound read in WLAN HOST function.

Published 2018-09-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (39.1th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Google Android
Qualcomm, Inc. Android For Msm, Firefox OS Qrd — versions All Android releases from CAF using the Linux kernel

Weakness classification (CWE)

CWE-129 — Improper Validation of Array Index

References

www.codeaurora.org/security-bulletin/2018/09/04/september-2018-code-aurora-secu… (Patch, Third Party Advisory)
source.codeaurora.org/quic/la/platform/vendor/qcom-opensource/wlan/qcacld-3.0/c… (Patch, Third Party Advisory)
www.securityfocus.com/bid/107770 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-11891?: CVE-2018-11891 is a high-severity vulnerability in Google Android, classified under Improper Validation of Array Index. CVSS score: 8.8/10. Published 2018-09-19.
How severe is CVE-2018-11891?: High severity. CVSS v3 base score is 8.8 out of 10.