What is CVE-2018-9284?

CVE-2018-9284 is a critical-severity vulnerability in Dlink Dir-868l, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2018-04-04.

How severe is CVE-2018-9284?

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

Buffer overflow in Dlink Dir-868l

CVE-2018-9284

authentication.cgi on D-Link DIR-868L devices with Singapore StarHub firmware before v1.21SHCb03 allows remote attackers to execute arbitrary code.

Vulnerability class: Buffer Overflow

Published 2018-04-04 · 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: 0.046 (91.4th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.046 · newest: 0.046 · change: -0.000

Affected products

Weakness classification (CWE)

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

References

www.fortinet.com/blog/threat-research/fortiguard-labs-discovers-vulnerability-i… (Patch, Third Party Advisory)
www.dlink.com.sg/dir-868l/ (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2018-9284?: CVE-2018-9284 is a critical-severity vulnerability in Dlink Dir-868l, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2018-04-04.
How severe is CVE-2018-9284?: Critical severity. CVSS v3 base score is 9.8 out of 10.