What is CVE-2018-11903?

CVE-2018-11903 is a high-severity vulnerability in Google Android, classified under Improper Validation of Array Index. CVSS score: 7.8/10. Published 2018-09-19.

How severe is CVE-2018-11903?

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

Buffer overflow in Google Android

CVE-2018-11903

In all android releases (Android for MSM, Firefox OS for MSM, QRD Android) from CAF using the linux kernel, lack of length validation check for value received from caller function used as an array index for WMA interfaces can lead to OOB write in WLAN HOST.

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

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (6.5th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 6.5% 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

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

Weakness classification (CWE)

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)

Frequently asked questions

What is CVE-2018-11903?: CVE-2018-11903 is a high-severity vulnerability in Google Android, classified under Improper Validation of Array Index. CVSS score: 7.8/10. Published 2018-09-19.
How severe is CVE-2018-11903?: High severity. CVSS v3 base score is 7.8 out of 10.