CVE-2018-21049

Name: CVE-2018-21049
Creator: NVD / NIST
Published: 2020-04-08T18:15:13.277+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.56%

Last modified Jun 17, 2026

CVE-2018-21049 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An issue was discovered on Samsung mobile devices with N(7.x) and O(8.X) (Exynos chipsets) software. There is an arbitrary memory write in a Trustlet because a secure driver allows access to sensitive APIs. EPSS estimates a 0.56% chance of exploitation in the next 30 days.

Description

An issue was discovered on Samsung mobile devices with N(7.x) and O(8.X) (Exynos chipsets) software. There is an arbitrary memory write in a Trustlet because a secure driver allows access to sensitive APIs. The Samsung ID is SVE-2018-12881 (November 2018).

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.56%

42.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Google	Android	7.0
Google	Android	7.1.0
Google	Android	7.1.1
Google	Android	7.1.2
Google	Android	8.0
Google	Android	8.1

References

https://security.samsungmobile.com/securityUpdate.smsbVendor Advisory
https://security.samsungmobile.com/securityUpdate.smsbVendor Advisory

Timeline

Published: Apr 8, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-21049?

How severe is CVE-2018-21049?

CVE-2018-21049 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.56% probability of exploitation in the next 30 days.

How do I fix CVE-2018-21049?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-21049?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST