What is CVE-2018-14856?

CVE-2018-14856 is a medium-severity vulnerability in Samsung Galaxy S6, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.3/10. Published 2018-12-17.

How severe is CVE-2018-14856?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Buffer overflow in Samsung Galaxy S6

CVE-2018-14856

Buffer overflow in dhd_bus_flow_ring_create_response in drivers/net/wireless/bcmdhd4358/dhd_pcie.c in the bcmdhd4358 Wi-Fi driver on the Samsung Galaxy S6 SM-G920F G920FXXU5EQH7 allow an attacker (who has obtained code execution on the Wi-Fi) chip to cause the device driver to perform invalid memory accesses. The Samsung ID is SVE-2018-11785.

Vulnerability class: Buffer Overflow

Published 2018-12-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.009 (60.6th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 60.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Samsung Galaxy S6
Samsung Galaxy S6 Firmware — versions g920fxxu5eqh7

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

github.com/securesystemslab/periscope/blob/master/bugs-found/CVE-2018-14854_CVE… (Exploit, Third Party Advisory)
people.cs.kuleuven.be/~stijn.volckaert/papers/2019_NDSS_PeriScope.pdf (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-14856?: CVE-2018-14856 is a medium-severity vulnerability in Samsung Galaxy S6, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.3/10. Published 2018-12-17.
How severe is CVE-2018-14856?: Medium severity. CVSS v3 base score is 6.3 out of 10.