What is CVE-2018-0633?

CVE-2018-0633 is a high-severity vulnerability in Nec Aterm W300p, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.2/10. Published 2019-01-09.

How severe is CVE-2018-0633?

High severity. CVSS v3 base score is 7.2 out of 10.

Buffer overflow in Nec Aterm W300p

CVE-2018-0633

Buffer overflow in Aterm W300P Ver1.0.13 and earlier allows attacker with administrator rights to execute arbitrary code via submit-url parameter.

Vulnerability class: Buffer Overflow

Published 2019-01-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.018 (77.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000

Affected products

Nec Aterm W300p
Nec Aterm W300p Firmware
Nec Corporation Aterm W300p — versions Ver1.0.13 and earlier

Weakness classification (CWE)

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

References

jpn.nec.com/security-info/secinfo/nv18-011.html (Vendor Advisory)
jvn.jp/en/jp/JVN26629618/index.html (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2018-0633?: CVE-2018-0633 is a high-severity vulnerability in Nec Aterm W300p, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.2/10. Published 2019-01-09.
How severe is CVE-2018-0633?: High severity. CVSS v3 base score is 7.2 out of 10.