What is CVE-2018-0641?

CVE-2018-0641 is a high-severity vulnerability in Nec Aterm Hc100rc, 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-2018-0641?

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

Buffer overflow in Nec Aterm Hc100rc

CVE-2018-0641

Buffer overflow in Aterm HC100RC Ver1.0.1 and earlier allows attacker with administrator rights to execute arbitrary code via tools_system.cgi date parameter, time parameter, and offset 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 2026-09-29.

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 Hc100rc
Nec Aterm Hc100rc Firmware
Nec Corporation Hc100rc — versions Ver1.0.1 and earlier

Weakness classification (CWE)

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

References

jvn.jp/en/jp/JVN84825660/index.html (Third Party Advisory, third-party-advisory)
jpn.nec.com/security-info/secinfo/nv18-011.html (Vendor Advisory)

Frequently asked questions

What is CVE-2018-0641?: CVE-2018-0641 is a high-severity vulnerability in Nec Aterm Hc100rc, 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-2018-0641?: High severity. CVSS v3 base score is 7.2 out of 10.