What is CVE-2018-5861?

CVE-2018-5861 is a high-severity vulnerability in Google Android, classified under Incorrect Type Conversion or Cast. CVSS score: 7.8/10. Published 2018-11-27.

How severe is CVE-2018-5861?

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

Vulnerability in Google Android

CVE-2018-5861

In all android releases(Android for MSM, Firefox OS for MSM, QRD Android) from CAF using the linux kernel, existing checks in place on partition size are incomplete and can lead to heap overwrite vulnerabilities while loading a secure application from the boot loader.

Published 2018-11-27 · 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 (5.6th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 5.6% 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

Weakness classification (CWE)

CWE-704 — Incorrect Type Conversion or Cast

References

source.codeaurora.org/quic/la/kernel/lk/commit/ (Patch, Third Party Advisory)
www.codeaurora.org/security-bulletin/2018/11/05/november-2018-code-aurora-forum… (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2018-5861?: CVE-2018-5861 is a high-severity vulnerability in Google Android, classified under Incorrect Type Conversion or Cast. CVSS score: 7.8/10. Published 2018-11-27.
How severe is CVE-2018-5861?: High severity. CVSS v3 base score is 7.8 out of 10.