What is CVE-2017-18020?

CVE-2017-18020 is a high-severity vulnerability in Samsung Mobile, classified under Improper Input Validation. CVSS score: 8.4/10. Published 2018-01-04.

How severe is CVE-2017-18020?

High severity. CVSS v3 base score is 8.4 out of 10.

Improper input validation in Samsung Mobile

CVE-2017-18020

On Samsung mobile devices with L(5.x), M(6.x), and N(7.x) software and Exynos chipsets, attackers can execute arbitrary code in the bootloader because S Boot omits a size check during a copy of ramfs data to memory. The Samsung ID is SVE-2017-10598.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2018-01-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (35.6th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Samsung Mobile — versions 5.0, 5.1, 5.1.1

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

security.samsungmobile.com/securityUpdate.smsb (Vendor Advisory)

Frequently asked questions

What is CVE-2017-18020?: CVE-2017-18020 is a high-severity vulnerability in Samsung Mobile, classified under Improper Input Validation. CVSS score: 8.4/10. Published 2018-01-04.
How severe is CVE-2017-18020?: High severity. CVSS v3 base score is 8.4 out of 10.