What is CVE-2017-18691?

CVE-2017-18691 is a critical-severity vulnerability in Google Android, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2020-04-07.

How severe is CVE-2017-18691?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Google Android

CVE-2017-18691

An issue was discovered on Samsung mobile devices with M(6.0) and N(7.0) (Exynos8890 chipsets) software. There are multiple Buffer Overflows in TSP sysfs cmd_store. The Samsung ID is SVE-2016-7500 (January 2017).

Vulnerability class: Buffer Overflow

Published 2020-04-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (35.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.8% 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

Google Android — versions 6.0, 7.0
Samsung Exynos 8890

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

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

Frequently asked questions

What is CVE-2017-18691?: CVE-2017-18691 is a critical-severity vulnerability in Google Android, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2020-04-07.
How severe is CVE-2017-18691?: Critical severity. CVSS v3 base score is 9.8 out of 10.