What is CVE-2018-9518?

CVE-2018-9518 is a high-severity vulnerability in Google Android, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2018-12-07.

How severe is CVE-2018-9518?

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

Buffer overflow in Google Android

CVE-2018-9518

In nfc_llcp_build_sdreq_tlv of llcp_commands.c, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Product: Android. Versions: Android kernel. Android ID: A-73083945.

Vulnerability class: Buffer Overflow

Published 2018-12-07 · 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: 0.003 (16.7th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 16.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Google Android
Google Inc. Android — versions Android Kernel
Canonical Ubuntu Linux — versions 12.04, 14.04

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

source.android.com/security/bulletin/pixel/2018-09-01 (Vendor Advisory)
usn.ubuntu.com/3798-1/ (vendor-advisory, Patch, Third Party Advisory)
usn.ubuntu.com/3798-2/ (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2018-9518?: CVE-2018-9518 is a high-severity vulnerability in Google Android, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2018-12-07.
How severe is CVE-2018-9518?: High severity. CVSS v3 base score is 7.8 out of 10.